Scientists Uncover Largest Protoplanetary Disk Ever Detected Around Young Star

IRAS 23077+6707: A Turbulent Protoplanetary Disk – Located approximately 1,000 light-years away, this young star exhibits an unexpectedly chaotic and turbulent surrounding protoplanetary disk, with material fragments extending farther than what astronomers have previously observed in similar systems. For more details, check the study here.



This Hubble image showcases the protoplanetary disk surrounding IRAS 23077+6707. Image credit: NASA / ESA / STScI / K. Monsch, CfA / J. DePasquale, STScI.

Protoplanetary disks, rich in dust and gas, form around young stars and serve as primary locations for planet formation.

The disk surrounding IRAS 23077+6707 spans approximately 644 billion km (400 billion miles), making it about 40 times the diameter of our solar system, reaching to the outer Kuiper belt.

This vast disk obscures the star, which scientists suggest could be a massive star or potentially a binary star system.

Not only is this disk the largest known for planet formation, but its unique characteristics also make it exceptionally rare.

“It’s uncommon to capture such fine detail in protoplanetary disks. The new Hubble images suggest that planetary nurseries might be much more dynamic and chaotic than we previously thought,” explained Dr. Christina Monsch, an astronomer at Harvard University and the Smithsonian Center for Astrophysics.

“Observing this disk nearly head-on reveals its delicate upper layers and asymmetrical features,” she added.

Both the NASA/ESA Hubble Space Telescope and the NASA/ESA/CSA James Webb Space Telescope have glimpsed similar structures, but IRAS 23077+6707 allows for unmatched visibility of its substructure in visible light.

This unique perspective makes it an exceptional laboratory for studying planet formation and the environments in which it occurs.

Edge-on, these disks resemble hamburgers, with bright upper and lower layers of glowing dust and gas, separated by a dark central lane.

In addition to its significant height, the new images reveal that vertical filament-like structures only appear on one side of the disk, indicating an uneven distribution of material.

“We were astonished by how asymmetric this disk appeared,” noted Dr. Joshua Bennett Lovell from the Harvard University & Smithsonian Center for Astrophysics.

“Hubble provides us with an exceptional view of the chaotic processes involved in the formation of disks and new planets. This process remains poorly understood, but these insights allow for fresh study opportunities.”

All planetary systems originate from a disk of gas and dust surrounding young stars. Over time, gas is absorbed by the star while planets form from the remaining material.

IRAS 23077+6707 might act as an extended analog to the early Solar System, with an estimated disk mass between 10 to 30 times that of Jupiter, providing sufficient material for multiple gas giant planets.

This and other discoveries make IRAS 23077+6707 an extraordinary case for examining planetary system formation.

“Theoretically, IRAS 23077+6707 could support a vast planetary system,” Dr. Monch stated.

“While planet formation may differ in such expansive conditions, the fundamental processes are likely akin to those in smaller systems.”

“At this point, we have more questions than answers, but these new images serve as a valuable foundation for understanding how planets evolve in diverse environments.”

Findings are set to be published in the Astrophysical Journal and can be accessed here.

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Christina Monche et al. 2025. Hubble reveals the complex multiscale structure of the edge-on protoplanetary disk IRAS 23077+6707. APJ in press. arXiv: 2510.11819

Source: www.sci.news

Astronomers May Have Detected Signs of the Largest Star Ever Observed

Artist’s Impression of Population III Stars in the Early Universe

Noir Lab/NSF/AURA/J. da Silva/Space Engine/M. Zamani

The James Webb Space Telescope (JWST) offers astronomers a unique opportunity to explore distant galaxies that exist far beyond the early Universe. Some of these galaxies exhibit chemical signatures that may suggest the presence of exotic supermassive stars, possibly weighing up to 10,000 times that of our Sun.

These enormous stars are puzzling, as our current understanding suggests that stars in the nearby universe generally have a maximum size limit. “Our models for galaxy evolution are predicated on the assumption that stars cannot exceed around 120 solar masses,” explains Devesh Nandal at the Harvard-Smithsonian Center for Astrophysics, Massachusetts. “While we had theorized about stars potentially larger than this, there were no observational data to validate it.”

That all changed recently. Nandal and his team analyzed JWST observations of a distant galaxy dubbed GS 3073, discovering its chemical signature contained an unexpectedly high concentration of nitrogen. Though elevated nitrogen levels have also been noted in several other remote galaxies,

For most galaxies, nitrogen concentrations aren’t high enough to cause ambiguity and can be attributed to certain classes of relatively ordinary stars or other cosmic phenomena. However, this isn’t the case for GS 3073, as Nandal asserts that the nitrogen levels are simply too elevated.

There exists a hypothetical category of protostar referred to as a Population III star, which models indicate can grow to considerable sizes. Simulations suggest that if these stars form, they would produce significantly more nitrogen than typical stars. Nandal and his co-researchers concluded that only a handful of Population III stars—ranging from 1,000 to 10,000 solar masses—could account for the excess nitrogen observed in GS 3073. “Our research provides the most compelling evidence yet for the existence of Population III supermassive stars in the early universe,” he declares.

However, some scholars challenge whether only supermassive Population III stars can account for this data, or if they do so accurately. “Population III should be linked with an environment where elements heavier than helium are scarce,” notes Roberto Maiorino of Cambridge University. “Conversely, GS 3073 is a fairly chemically mature galaxy, which makes it seem ill-suited for the types of environments typically associated with Population III.”

On the other hand, John Regan from Maynooth University in Ireland suggests that this may simply be an unusual galaxy. “When we look back at the early universe, what we see are incredibly strange, exotic galaxies. It’s challenging to assert that we shouldn’t expect the formation of supermassive stars simply because it’s peculiar; you just claimed these galaxies are quite bizarre,” he states.

If these colossal stars truly exist, they may unlock mysteries related to the formation of supermassive black holes in the universe’s distant past. Should they originate from supermassive stars instead of conventional stars, we could gain critical insights into how these black holes achieved their immense sizes in what appears to be a relatively brief time frame.

Confirming the existence of supermassive stars in GS 3073 and other nitrogen-rich galaxies from the early Universe is complex, and additional discoveries of these chemical signatures may be necessary. “It’s quite challenging to bolster the argument for their existence; establishing definitive signatures is difficult,” Regan lamented. “Nonetheless, this indication is incredibly robust.”

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Source: www.newscientist.com

Scientists Discover Largest Black Hole Flare Ever Recorded, Emitting 10 Trillion Solar Rays

A supermassive black hole has violently consumed a massive star, resulting in a cosmic explosion that shone as brightly as 10 trillion suns, according to a recent study.

This event, referred to as a black hole flare, is believed to be the largest and most remote ever detected.

“This is genuinely a one-in-a-million occurrence,” stated Matthew Graham, a research professor of astronomy at the California Institute of Technology and the lead author of the study published Tuesday in Nature Astronomy.

Graham indicated that based on the explosion’s intensity and duration, a black hole flare is likely the explanation, but further studies will be necessary to validate this conclusion.

While it is common for black holes to devour nearby stars, gas, dust, and other materials, such significant flare events are exceptionally rare, according to Graham.

“This enormous flare is far more energetic than anything we’ve encountered previously,” he remarked, noting that the explosion’s peak luminosity was 30 times that of any black hole flare documented so far.

Its extreme intensity is partly due to the massive size of the celestial objects involved. The star that came too close to the black hole is estimated to possess at least 30 times the mass of the Sun, while the supermassive black hole and its surrounding matter disk are estimated to be 500 million times more massive than the Sun.

Graham mentioned that these powerful explosions have persisted for more than seven years and are likely still ongoing.

The flare was initially detected in 2018 during a comprehensive sky survey using three ground-based telescopes. At the time, it was identified as a “particularly bright object,” but follow-up observations months later yielded little valuable data.

Consequently, black hole flares were mostly overlooked until 2023, when Graham and his team opted to revisit some intriguing findings from their earlier research. Astronomers have since managed to roughly ascertain the distance to this exceptionally bright object, and the results were astonishing.

“Suddenly, I thought, ‘Wow, this is actually quite far away,'” Graham explained. “And if it’s this far away and this bright, how much energy is it emitting? This is both unusual and intriguing.”

While the exact circumstances of the star’s demise remain unclear, Graham hypothesized that a cosmic collision might have nudged the star from its typical orbit around the black hole, leading to a close encounter.

This finding enhances our understanding of black hole behavior and evolution.

“Our perspective on supermassive black holes and their environments has dramatically transformed over the past five to ten years,” Graham stated. “We once pictured most galaxies in the universe with a supermassive black hole at the center, idly rumbling away. We now recognize it as a much more dynamic setting, and we are just beginning to explore its complexities.”

He noted that while the flares are gradually diminishing over time, they will remain detectable with ground-based telescopes for several more years.

Source: www.nbcnews.com

Trump Grants Pardon to Founder of Binance, the World’s Largest Cryptocurrency Exchange

On Thursday, President Donald Trump granted a pardon to the founder of the largest cryptocurrency exchange globally.

The White House issued a statement saying, “President Trump utilized his constitutional powers by pardoning Mr. Zhao, who faced prosecution from the Biden administration concerning the virtual currency conflict. The conflict against virtual currencies is concluded.”

Qiao Changpeng stepped down as CEO of Binance in late 2023 after admitting to one count of failing to uphold an anti-money laundering program, alongside a payment of $4.3 billion to resolve associated accusations. He received a four-month prison sentence.


Chao, commonly known as CZ, ranks among the wealthiest individuals globally and is a prominent figure in the cryptocurrency industry. He established Binance as the largest cryptocurrency exchange; however, operations in the United States are prohibited following his guilty plea in 2023.

The pardon from President Trump marks a significant triumph for Chao and Binance after a period of lobbying and speculation. It also signifies a shift towards reduced scrutiny of the cryptocurrency sector by the Trump administration, even as the president and his family develop their own crypto business empire worth billions.

A spokesperson from Binance commented, “Today brings remarkable news regarding CZ’s pardon. We express our gratitude to President Trump for his guidance and dedication to making the United States the leading hub for cryptocurrency.”

During a press interaction on Thursday, President Trump addressed the pardon, minimizing Zhao’s offenses and asserting that he had no previous relationship with the cryptocurrency mogul.

In response to a query from a reporter about the decision, President Trump remarked, “Are you referring to the crypto individual? Many assert that he did nothing wrong. They claim his actions weren’t even criminal. It was persecution from the Biden administration, leading me to pardon him upon request from a number of esteemed individuals.”

Representatives from the Trump family’s crypto venture have discussed acquiring a stake in The Wall Street Journal, which is Binance’s U.S. arm. This was reported earlier this year. Mr. Zhao claimed that he was negotiating an agreement in return for clemency.

“Fact: I have never discussed my arrangement with Binance US with…well, anyone,” Zhao stated in a post on X in March. “Serious criminals wouldn’t be concerned about pardons,” he added.

However, Binance has significantly contributed to the growth of the Trump family’s World Liberty Financial cryptocurrency enterprise. Earlier this year, when Binance entered into a $2 billion agreement with a UAE investment fund, the payment was made using a cryptocurrency developed by World Liberty Financial. This enhanced the legitimacy of the Trump family’s digital currency and proved to be a highly profitable move for Binance.

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In May, Zach Witkoff, the founder of the Trump family’s cryptocurrency entity, expressed at a press conference in Dubai to unveil the deal: “We appreciate the confidence that MGX and Binance have placed in us.”

A group of Democratic senators, including Elizabeth Warren, the ranking member of the Senate Banking, Housing, and Urban Affairs Committee; issued a statement after the May agreement, expressing concerns that Binance and the Trump administration may be seeking a deal that enriches the president.

“As the administration eases oversight of industries violating money laundering and sanctions regulations, it is not surprising that Binance, which has acknowledged prioritizing its growth and profits over compliance with U.S. law, would seek to eliminate the supervision mandated by the settlement,” the senators remarked.

The lawsuit by the U.S. Department of Justice against Binance alleges that the company neglected to report over 100,000 suspicious transactions to law enforcement, including those involving U.S.-designated terrorist entities such as Al Qaeda and Hamas. The Securities and Exchange Commission filed a lawsuit against the company in 2023, but dropped the case shortly after President Trump assumed office.

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Southern Impact Reveals Magma Ocean in Moon’s Largest Crater: Study

Approximately 4.3 billion years ago, during the early formation of our solar system, a massive asteroid collided with the far side of the moon, resulting in the creation of the South Pole-Aitken Basin—an enormous crater. This feature, the largest on the moon, spans over 1,200 miles in length and 1,000 miles in width. Its rectangular shape is attributed to a glancing impact rather than a direct hit. Challenging previous beliefs that the basin was formed by an asteroid coming from the south, recent research indicates that the narrowing shape of the basin towards the south suggests an impact from the north.



The South Pole-Aitken Impact Basin on the far side of the Moon was formed by a southward impact. Image credit: Jeff Andrews-Hanna / University of Arizona / NASA / National Astronomical Observatory of Japan.

“The downstream edge of the basin should have a thick layer of material that was excavated from the moon’s interior by the impact, while the upper edge should not,” explained Dr. Jeffrey Andrews-Hanna, a planetary scientist at the University of Arizona.

“This suggests that the Artemis mission will target the downrange rim of the basin, an ideal site to examine the moon’s largest and oldest impact basins, where most of the ejecta, consisting of material from deep within the moon, are likely to be gathered.”

Historically, it has been believed that early moons were molten due to the energy released during their formation, resulting in a magma ocean that enveloped the entire moon.

As this magma ocean solidified, heavy minerals settled to create the Moon’s mantle, while lighter minerals floated upwards to form the Earth’s crust.

Nevertheless, certain elements were not incorporated into the solid mantle and crust, but instead became concentrated in the last liquid remnants of the magma ocean.

These “residual” elements, including potassium, rare earth elements, and phosphorus, are collectively known as KREEP.

Dr. Andrews-Hanna and his team noted that these elements appear to be especially abundant on the moon’s near side.

“If you’ve ever frozen a can of soda, you might have noticed that high fructose corn syrup doesn’t freeze all the way through and instead accumulates at the bottom of the liquid,” remarked Dr. Andrews-Hanna.

“We believe a similar phenomenon occurred on the moon with KREEP.”

“Over millions of years, as it cooled, the magma ocean crystallized into the crust and mantle.”

“Eventually, only a small amount of liquid remained trapped between the mantle and the crust, which is this KREEP-rich material.”

“The abundance of KREEP’s heat-producing elements somehow concentrated on the moon’s near side, causing it to heat up and initiate intense volcanic activity, thus creating the dark volcanic plains visible from Earth.”

“However, the process by which this KREEP-rich material became concentrated on the near side and how it evolved remains an enigma.”

“The moon’s crust is considerably thicker on the far side compared to the near side that faces Earth, a discrepancy that continues to puzzle scientists.”

“This asymmetry influences various aspects of the moon’s development, including the final stages of the magma ocean.”

“Our hypothesis posits that as the far side’s crust thickened, the underlying magma ocean was forced outward, akin to squeezing toothpaste from a tube, causing most of it to accumulate on the near side.”

A recent investigation of the Antarctic Aitken Basin has uncovered unexpected asymmetries supporting this scenario. The western ejecta blanket is rich in radioactive thorium, while the eastern side is not.

This indicates that the rift left by the impact formed a conduit through the moon’s crust, near the boundary separating the “normal” crust from the underlying layers that contain the final remnants of the KREEP-rich magma ocean.

“Our research shows that the distribution and composition of these materials align with predictions derived from modeling the later stages of magma ocean evolution,” stated Dr. Andrews-Hanna.

“The last remnants of the Moon’s magma ocean have reached the near side, where the concentration of radioactive elements is at its peak.”

“However, prior to this, there may have been a thin, patchy layer of magma ocean beneath parts of the far side, explaining the presence of radioactive ejecta on one flank of the Antarctic Aitken Basin.”

For further information, refer to the study published in the journal Nature.

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JC Andrews-Hanna et al. 2025. The southern impact excavated a magma ocean in the Moon’s South Pole Aitken Basin. Nature 646, 297-302; doi: 10.1038/s41586-025-09582-y

Source: www.sci.news

The Formation of the Moon’s Largest Crater Was Surprising

The Antarctic Aitken Basin (the predominantly blue region in the center of this topographic representation) is an impact feature roughly 2500 kilometers in diameter, covered by smaller craters.

NASA/GSFC/MIT

An in-depth investigation of its morphology reveals that the moon’s oldest and largest crater formed differently than previously believed, altering our understanding of lunar history.

The South Pole-Aitken (SPA) basin emerged around 4.3 billion years ago, occurring hundreds of millions of years after the moon’s initial formation. Scientists theorize it was created when a colossal asteroid grazed the moon’s surface, producing a crater thousands of kilometers wide and 12 kilometers deep.

This crater, located on the moon’s far side, displays a substantial accumulation of ancient debris near its northern edge. This debris pattern aligns with what would be expected if an asteroid struck the Earth from a southerly trajectory, below the South Pole.

However, new findings indicate a different scenario. Jeffrey Andrews-Hanna from The University of Arizona and his team discovered that the crater narrows towards the south. Andrews-Hanna noted that this teardrop shape implies the asteroid originated from the north, with the cataclysmic impact occurring from the opposite direction.

Mapping the basin’s shape is challenging due to the erosion of its ancient boundaries from later impacts. “We traced the contours of the Antarctic Aitken Basin using every conceivable method,” states Andrews-Hanna. “Models of topography, gravity, and crustal thickness were employed. We explored various approaches for tracing the basin, but with every method, it consistently tapered to the south.”

The researchers then contrasted its shape to well-studied craters on other celestial bodies, such as Mars’ Hellas and Utopia Craters. This comparison has provided clearer geological evidence on how these craters formed, leading them to conclude that the SPA basin’s shape likely resulted from an asteroid impacting from the north.

This new understanding will significantly affect how the moon’s internal material is distributed, aiding scientists in comprehending the moon’s cooling process from a massive ocean of magma during its formative years. It also suggests that some rocks around the SPA basin’s perimeter originate from the moon’s deep interior, which remains otherwise inaccessible.

This insight will enhance NASA’s forthcoming Artemis III mission, which aims to deploy astronauts to the SPA basin’s edge in search of potential water ice, as highlighted by Mahesh Anand from the Open University, UK. “This will provide opportunities to learn more about the moon’s interior, despite the lack of available samples,” he adds. “It’s a significant advantage.”

Ultimately, however, the true nature of the crater’s formation will only be clarified when samples from the SPA basin are returned to Earth, according to Anand.

Total Solar Eclipse 2027 Cruise: Spain and Morocco

Join us for an incredible adventure aboard the cutting-edge exploration vessel Douglas Mawson to experience the longest total solar eclipse of the century on August 2, 2027.

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Source: www.newscientist.com

Discovered the Largest Black Hole in the Universe to Date

Astronomers have been monitoring the largest black holes observed in space thus far.

Through a combination of two distinct measurement techniques, researchers have recently identified that these colossal black holes possess nearly 10,000 times the mass of the ultra-massive black holes at the center of our galaxy.

This colossal black hole is situated five billion light-years from Earth, at the core of the Cosmic Horseshoe, one of the largest known galaxies. This massive galaxy seems to gather all the galaxies in its vicinity, meaning both it and its black hole have reached their ultimate sizes.

The black hole itself weighs an astonishing 36 billion times the mass of our sun.

The discovery is particularly remarkable given that these black holes are inactive, lacking the typical surrounding luminous dusty disc.

Instead, a recent study published in the Monthly Notices of the Royal Astronomical Society utilized a combination of two established methods to ascertain the size of this mega black hole.

“The ‘golden’ method generally depends on the kinematics of stars, meaning we measure how the stars move within the galaxy,” noted Carlos Mello in an interview with BBC Science Focus. He is a PhD student at a federal university in Brazil that led the research.

The speed of stars situated at the center of a galaxy correlates closely with the mass of its supermassive black hole. Scientists report that these stars are moving at astonishing velocities, around 400 kilometers (249 miles) per second, indicating an extraordinarily large black hole.

“However, this technique is most efficient for nearby galaxies where telescopes can better resolve the area surrounding the black hole,” Mello explained.

Given that the Cosmic Horseshoe is five billion light-years away, astronomers also employed a second method that utilizes the gravitational lensing effect of galaxies.

The Cosmic Horseshoe is known for the nearly perfect ring of light formed by a gravitational lens that bends light from a background galaxy – Credit: NASA/ESA

Gravitational lenses occur when light from a distant galaxy passes by a massive “lens” object, in this case, the black hole within the Cosmic Horseshoe. The gravity from this “lens” distorts the incoming light much like a magnifying glass, amplifying the light from the background galaxy while altering its appearance.

Astronomers can utilize this distortion to gauge the mass of the lensing object.

“The Cosmic Horseshoe is exceptional because it enables us to leverage both of these powerful methods simultaneously. This gives me greater confidence in the measurements of the black hole and its mass,” Mello remarked.

Both the galaxy and its black hole have achieved immense scales by merging with neighboring galaxies. This is the typical growth process for galaxies over time; ultimately, no surrounding galaxies can merge without reaching significant mass increases.

The Cosmic Horseshoe has reached this advanced stage, existing within a bubble of relatively few bright galaxies nearby.

“This discovery provides a unique insight into the culmination of galaxy and black hole formation,” Mello stated. “By examining this system, we can enhance our understanding of how other galaxies and their ultra-massive black holes evolve over cosmic time.”

About Our Experts

Carlos Mello is a doctoral student at a Federal University in Brazil.

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Source: www.sciencefocus.com

Niger Probes $5 Million Sale of Earth’s Largest Martian Rock

Dakar, Senegal – the largest meteorite discovered on Earth – a 54-pound (25 kilograms) rock that fetched over $5 million at a New York auction last month, setting a world record.

However, in a West African nation where rusty red rocks have been excavated from the Sahara desert, authorities have initiated an investigation into what they describe as “illegal international trafficking,” suggesting it may have been smuggled from the country.

Here’s what you should know about meteorites and legal controversies:

How was it discovered

According to Sotheby’s, the rock, designated NWA 16788, was dislodged from the surface of Mars by a massive asteroid collision and journeyed 140 million miles (225 million kilometers) to Earth.

It was uncovered in the Sahara, northwest Niger by an unnamed meteorite hunter in November 2023, as per the auction house’s report. The identities of buyers remain undisclosed.

In the arid regions of the Sahara like Niger, meteorite hunting is on the rise. While meteorites can fall anywhere on Earth, the Sahara has emerged as a prime location for their discovery due to its climate, which is conducive to conservation.

Hunters often seek space rocks to sell to collectors and scientists. The most coveted and valuable meteorites are from Mars and the Moon.

As reported by the Heritage Academic Journal, the rock was sold to international dealers and eventually made it to a private gallery in Italy. Last year, a team of scientists from the University of Florence examined the rock to determine its structure and origins before it fell to Earth.

The meteorite was briefly showcased in Rome before appearing at the New York auction last month.

Why Niger is investigating

Following the sale, Niger raised concerns about how the meteorite was made available for auction.

Last month, the Niger government launched an inquiry into the discovery and sale of meteorites, stating that it resembles “illegal international trafficking.”

Last week, President Abdullah Hamanetiani halted the export of precious stones, semi-precious stones, and meteorites to ensure proper traceability.

In a statement to the Associated Press, Sotheby’s maintained that the meteorite was exported from Niger and transported in line with all applicable international regulations.

“In selling this item, all necessary documentation was obtained at each stage of the journey, consistent with best practices and the requirements of the involved countries,” the statement indicated.

Niger authorities did not respond to inquiries from the Associated Press.

What international law says

Patti Garstenblis, a cultural heritage attorney and expert on illegal trade, noted that rare minerals like meteorites are recognized as cultural property under the UNESCO Cultural Property Treaty, which both Niger and the United States have ratified.

However, Garstenbliss pointed out that Niger needs to establish ownership and that the meteorite was stolen.

“I doubt Niger could reclaim the meteorite if it wasn’t stolen and was properly declared upon entering the U.S.,” she stated to the Associated Press.

Paleontologist Paul Sereno, who has spent years uncovering dinosaur fossils in Niger’s Sahara, is advocating for the return of the nation’s cultural and natural heritage, including meteorites.

“When laws clearly state that rare minerals like meteorites are cultural artifacts, unique and valuable items cannot just be claimed without consideration for the country,” he told the AP.

“We are no longer in a colonial era,” he added.

In certain countries, including Morocco, a major source of meteoritic specimens for international markets, if an object is found on their territory, compensation is required. Nonetheless, due to the expansive desert regions and the informal trading networks, enforcement remains challenging.

Source: www.nbcnews.com

Astronomers Uncover the Largest Black Holes Yet

Astronomers have discovered and quantified the largest black hole ever found. This colossal black hole approaches the theoretical maximum size allowable in the universe and is approximately 10,000 times the mass of Sagittarius A*, the supermassive black hole located at the center of the Milky Way.

This Hubble image features a horseshoe-shaped gravity lens (from center to right). Behind it is a blue galaxy, distorted into a horseshoe-shaped ring by the space-time distortion caused by the massive orange galaxies in the foreground. Image credits: NASA/ESA/Hubble.

The newly identified ultramassive black hole resides in the Space Horseshoe Gravity Lens System, which is among the largest known strong gravitational lenses.

This lens system, referred to as SDSS J1148+1930 and CSWA 1, lies 5 billion light years away in the Leo constellation.

“Typically, mass measurements of black holes in such distant systems can only be done when they are active,” remarks PhD Carlos Melo from Universidade Federativa do Rio Grande do Sul.

“However, these estimates based on accretion are often fraught with significant uncertainty.”

“Our method integrates strong gravitational lenses with stellar dynamics to yield more direct and reliable measurements, even in these distant systems.”

“The black holes we discovered rank among the top 10 largest black holes known, possibly even the largest,” adds Professor Thomas Collett from the University of Portsmouth.

“Most existing mass measurements for black holes are indirect and come with high uncertainties, so I can’t definitively say which one is the largest. But our new method provides much greater confidence in the mass of this black hole.”

The research team employed a synergy of gravitational lenses and stellar motions to locate the space horseshoe-shaped black holes.

This technique is considered the gold standard for black hole mass measurement, but galaxies are often too small in the sky to resolve areas containing these supermassive black holes, limiting effectiveness in distant contexts.

“The inclusion of a gravitational lens allowed us to explore further into the cosmos,” noted Professor Collett.

“We observed the influence of a black hole in two specific ways: it alters the path light takes as it navigates through the black hole, and stars in the galaxy’s core are observed moving incredibly fast (almost 400 km/s).”

“By correlating these two measurements, we can confidently establish the black hole’s authenticity.”

“This discovery pertains to a ‘dormant’ black hole, which does not actively consume material at the time of observation,” Melo explained.

“The detection relied solely on its immense gravitational pull and its effects on surrounding matter.”

“What’s particularly thrilling is that this method enables us to identify and gauge the masses of these elusive supermassive black holes across the universe, even when they lie completely dormant.”

An intriguing aspect of the Cosmic Horseshoe system is that its host galaxy is classified as a fossil group.

Fossil groups represent the final phase of the universe’s most colossal gravitationally-bound structures, formed from the collapse of a single, large galaxy devoid of bright companions.

“It is plausible that the supermassive black holes originally found in the companion galaxy contributed to the formation of the supermassive black holes we have identified,” Professor Collett noted.

“Thus, we can observe both the conclusion of galaxy formation and the cessation of black hole growth.”

The team’s paper was published today in Monthly Notices of the Royal Astronomical Society.

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Carlos R Melo-Carneiro et al. 2025. We are pleased to announce the discovery of a 36 billion solar-mass black hole at the core of the Cosmic Horseshoe Gravity Lens. MNRAS 541(4): 2853-2871; doi: 10.1093/mnras/staf1036

Source: www.sci.news

We Uncovered the Largest Black Hole Ever Found

Scientists have discovered an extraordinarily massive black hole billions of light years away

Igorzh/Shutterstock

A colossal black hole, located in a galaxy five billion light years away, boasts a mass over 10,000 times greater than the ultra-massive black hole found at the center of the Milky Way, and about 360 times greater than that of our Sun.

“This is likely the largest black hole in the universe,” states Thomas Collett from the University of Portsmouth, UK. “It’s equivalent to the mass of an entire small galaxy condensed into one singularity.”

This supermassive black hole is situated approximately five billion light years away, residing in one of the most well-known galaxies, referred to as the Space Horseshoe. Space Horseshoes serve as the largest known galaxy lenses, capable of bending light from objects situated behind them due to their immense gravitational forces. Previous research indicated that such enormous black holes might exist in the center of this galaxy, though pinpointing their exact mass has proven challenging for scientists.

To accurately determine the mass of the black hole, Collett and his team analyzed the orbital velocity of a nearby star, which directly correlates to the black hole’s mass. Additionally, they assessed how much light is distorted by the gravitational influence of the black hole, a phenomenon known as gravitational lensing. “Combining these two measurements allowed us to yield a highly confident estimation,” says Collett.

The mass of this black hole is remarkably large, aligning with Collett’s team’s prior investigations. Their research focuses on mapping the distribution of dark matter in the Galaxy, utilizing data gathered from observed light. They found that a successful model was only achievable with the inclusion of a supermassive black hole at the center of the universe’s horseshoe.

“The only time I started to get a good model was when I began considering black holes with incredibly high masses,” remarks Collett.

The horseshoe galaxy is theorized to be a ‘fossil group’ galaxy. This type of stellar system has absorbed all of its neighboring galaxies, a behavior that helps clarify the phenomenon of its black hole’s formidable size.

Yet, one enigmatic aspect persists. The black hole appears to have ceased growing and is currently dormant. “For it to expand, it must have been connected to the entire universe at some stage. It’s curious that it’s inactive at this moment,” Collett adds. “A process must have contributed to the black hole’s growth before it eventually plateaued.”

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Source: www.newscientist.com

Why Have Thousands of Adult Titles Vanished from the Largest PC Gaming Market? | Games

In the last two weeks, countless “adults only” and “not safe for work” games have been removed from Steam and itch.io—two leading platforms for PC game distribution—as they scramble to adhere to stricter regulations set by payment processors like MasterCard, Visa, and PayPal.

These regulations came about following a campaign known as A Collective Cry, which pressured payment processors to cease facilitating transactions for platforms hosting content that features “games related to rape, incest, and child sexual abuse.” However, the scope of these new rules extends far beyond those issues, affecting even award-winning titles.


How did this begin?

On July 16th, Valve, the developer behind Steam, revised its Rules and Guidelines for game distribution. Existing prohibitions against “nude or sexually explicit images of real people” and “adult content that is not labeled or age-gated” were expanded to include “content that may violate the rules and standards laid out by certain types of adult content.”

In a statement to PC gamers on July 18th, Valve acknowledged that several games have been “retired” from the Steam store due to these new regulations. However, they did not specify which games were removed or define what types of “adult content” are deemed unacceptable.

A week later, itch.io issued a statement indicating it was also being “scrutinized” by payment processors. Consequently, all games tagged as “NSFW” were “deleted” (removed from search results) following a “comprehensive audit of content to comply with payment processor requirements.” Unlike Valve, itch.io explicitly mentioned the collective cry as the impetus behind the increased scrutiny.


What is A Collective Cry?

Collective Shout is an Australian group describing itself as “a grassroots campaign against the objectification of women and the sexualization of girls.”

In April, they achieved a major victory by having the game No Mercy—featuring themes of “incest,” “coerced sexual acts,” and “inevitably non-consensual gender”—removed from both Steam and itch.io. Following this, the group released an open letter stating, “We have identified hundreds of additional games on Steam and itch.io that involve themes of rape, incest, and child sexual abuse,” demanding companies to “demonstrate corporate social responsibility” by ceasing payment processing for those platforms.

After Steam updated its rules, A Collective Cry requested credits for the changes, stating that over 1,000 supporters contacted their payment processors to “stop financing these games.”


What is the role of payment processors?

Like many online retailers, both Steam and itch.io depend on payment processors to facilitate transactions. As such, these processors wield significant influence, impacting what products can be sold, published, or purchased, regardless of their legality.

In recent years, payment processors have tightened rules regarding transactions linked to adult content. In 2021, several subscription-based adult content platforms considered banning such materials following pressure from payment processors but ultimately reversed that decision. Later that same year, MasterCard initiated a new policy governing adult content retailers. The American Civil Liberties Union has pointed out that these measures can restrict free speech and be detrimental to sex workers, contributing to financial censorship.




The award-winning game Consume Me has been affected by these policies. Photo: 66

Which games have been impacted?

It’s unclear how many games have been “retired” from Steam as a result of these new regulations, but several titles featuring incest themes have been deleted. As previously mentioned, itch.io has also removed most games labeled as NSFW. According to the Games Industry Newsletter Game Files, since July 16th, over 20,000 games have been removed from itch.io’s NSFW category.

Among those affected are games that explore unique themes of identity and sexuality, such as Radiator 2, created by Robert Yang, a former faculty member at New York University’s arcade center. The rules have also impacted games that do not feature sexual content at all, including The Last Call, an award-winning narrative about domestic violence survival created by Nina Freeman, and Consume Me, which has received numerous industry accolades for its approach to intricate topics.


How has the gaming industry reacted?

Many developers have criticized the power that payment processors hold over the market, particularly how their influence is amplified through campaign groups like A Collective Cry. In a post on Bluesky, Yang labeled the collective cry and payment processors’ actions as “a cultural war against sexual expression, particularly affecting LGBTQ individuals,” but noted that it is entirely unacceptable for payment processors to engage in selective censorship that systematically marginalizes adult content creators.

On July 17, a petition was launched on change.org, urging payment processors and activist groups to “refrain from controlling what we can watch, read, or play.” The petition argues that “MasterCard and Visa hinder legal entertainment” and calls for “the right to select our own narratives without moral surveillance.” Over 150,000 signatures have been gathered so far, as gamers and developers share contact information for major payment companies to encourage complaints.


What comes next?

It’s difficult to predict the future. Ongoing consumer pressure could prompt payment processors to reconsider their stance, but it may also challenge anti-censorship advocates to gain political backing amidst shifting legislative attitudes toward online adult content. The UK recently implemented stricter regulations regarding age verification for internet users seeking access to adult material, while the EU has proposed draft guidelines for similar measures.

Thus, new rules may be here to stay on Steam and itch.io for now. However, the resulting fallout has illuminated the influence of payment processors and the ambiguity surrounding the regulations. Such uncertainty may compel companies to tread more carefully in responding to pressure from future advocacy groups.

Source: www.theguardian.com

Astrophysicists Identify Gravitational Waves from the Largest Black Hole Mergers Recorded to Date

The twin detectors of the NSF’s Laser Interferometer Gravitational-Wave Observatory (LIGO) have made a groundbreaking discovery by detecting the highest composite mass recorded to date and the merger of two black holes. This event, identified as GW231123 and discovered on November 23, 2023, produced a final black hole with a mass over 225 times that of the Sun.



GW231123 An infographic detailing the merger of black holes. Image credits: Simona J. Miller/Caltech.

LIGO made history in 2015 with the first direct detection of gravitational waves, the ripples in spacetime.

In that instance, the waves were generated by the merger of black holes, culminating in a black hole with a mass 62 times that of our Sun.

The signal was simultaneously detected by LIGO’s twin detectors located in Livingston, Louisiana, and Hanford, Washington.

Since then, the LIGO team has collaborated with partners from Italy’s Virgo detectors and Japan’s KAGRA to create the LVK collaboration.

These detectors have collectively observed over 200 black hole mergers during their fourth observational run since starting in 2015.

Previously, the largest black hole merger recorded was in 2021 during the event GW190521, which had a total mass of 140 times that of the Sun.

During the GW231123 event, a black hole with a mass of 225 was formed by merging two black holes, one approximately 100 times and the other 140 times the mass of the Sun.

This discovery places it in a rare category known as intermediate mass black holes, which are heavier than those resulting from star collapses but significantly lighter than the supermassive black holes found at the centers of galaxies.

In addition to their substantial mass, these merged black holes exhibited rapid rotation.

“This is the largest black hole binary we’ve observed in gravitational waves and poses a significant challenge to our understanding of black hole formation,” stated Dr. Mark Hannam, an astrophysicist at Cardiff University and a member of the LVK collaboration.

“The existence of such a large black hole defies standard stellar evolution models.”

“One potential explanation is that the two black holes in this binary could have formed from the merger of smaller black holes.”

“This observation highlights how gravitational waves uniquely uncover the fundamental and exotic properties of black holes throughout the universe,” remarked Dr. Dave Reitze, executive director of LIGO at Caltech.

Researchers announced this week the discovery of GW231123, which will be discussed at the 24th International Conference on General Relativity and Gravity (GR24) and the 16th Edoardo Amaldi Meeting on Gravitational Waves, held jointly at the Gr-Amaldi Meeting in Glasgow, Scotland.

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LIGO-Virgo-KAGRA Collaboration. GW231123: The largest black hole binary detected by gravitational waves. Gr-Amaldi 2025

Source: www.sci.news

First Image from the World’s Largest Digital Camera Unveils Galaxy Collisions and Cosmic Wonders

Images and videos from the Vera C. Rubin Observatory showcase over 10 hours of test observations before being revealed. The event was live streamed on Monday from Washington, DC.

Keith Bector, an associate professor from the University of Wisconsin-Madison physics department, has contributed to the Rubin Observatory for nearly a decade as a system verification scientist, ensuring that all components of the observation deck function properly.

He mentioned that the team was present as images streamed in real-time from the camera.

“In the control room, there was a moment when all engineers and scientists gazed at these images. We were able to observe more details about stars and galaxies,” Vector explained to NBC News. “Understanding this on an intellectual level is one thing, but on an emotional level, I realized I was part of something truly extraordinary, all happening in real-time.”

One of the newly released images enabled the Rubin Observatory to identify galaxies billions of light-years away, alongside asteroids in the solar system and stars in the Milky Way.

“In fact, most of the objects captured in these images exhibit light that was emitted before our solar system was formed,” highlighted Bechtol. “We are witnessing light that reflects billions of years of the universe’s history, and many of these galaxies have never before been observed.”

Astronomers are eagerly awaiting the first images from the new observatory, affirming that experts will aid in unraveling some of the universe’s greatest mysteries and revolutionizing our understanding.

“We are entering the golden age of American science,” stated Harriet Kang, acting director of the Energy Department of Science. She elaborated in a statement.

“We anticipate that the observation deck will provide profound insights into our past, future, and potentially the fate of the universe,” Kang remarked during a Monday event.

The Vera C. Rubin Observatory is collaboratively managed by the Energy Agency and the National Science Foundation.

Named after an American astronomer renowned for uncovering evidence of dark matter in space, the observatory is situated atop Cerro Pachon, a mountain in central Chile. It is designed to capture around 1,000 images of the southern hemisphere sky each night, covering the entire visible southern sky every three to four nights.

These early images stem from a series of test observations and mark the commencement of a bold decade-long mission to scan the sky continuously, capturing all visible details and changes.

“The entire observatory design is centered on this capability, enabling you to point, shoot, and repeat,” Bechtol noted. “Every 40 seconds, the view shifts to a new part of the sky. Imagine bringing the night sky back to life in a way we’ve never experienced before.”

By repeating this process nightly over the next decade, scientists aim to create extensive images of the visible southern sky, tracking bright stars, moving asteroids in the solar system, measuring supernova explosions, and observing other cosmic phenomena.

“Utilizing this groundbreaking scientific facility, we will delve into many mysteries of the universe, including the dark matter and dark energy that fills our cosmos,” stated Brian Stone, Chief of Staff of the National Science Foundation, in a statement.

Source: www.nbcnews.com

Alma Identifies Molecular Activity in the Largest Known Oort Cloud Comet

Astronomers from the Atacama Large Millimeter/Submillimeter Array (Alma) have made observations of comet C/2014 UN271 (Bernardinelli-Bernstein).



Artist depiction of Comet C/2014 UN271. Image credits: NSF/AUI/NSF/NRAO/M.WEISS.

C/2014 UN271 was identified by astronomers Pedro Berner Dinnelli and Gary Bernstein through images captured in 2014 as part of dark energy research.

The comet spans approximately 140 km (85 miles) in diameter, making it over ten times larger than any known comet.

To date, little has been understood about the behavior of such cold, remote celestial bodies.

Recent findings from Alma revealed the intricate and dynamic jets of carbon monoxide gas erupting from the comet’s nucleus, offering the first direct evidence of what drives its activity in relation to the sun.

“With these measurements, we can understand how this massive, icy world functions,” stated Dr. Nathan Ross, an astronomer affiliated with a U.S. university and NASA’s Goddard Space Flight Center.

“We are observing explosive outgassing patterns that raise new inquiries about the comet’s evolution as it journeys deeper into the inner solar system.”

Alma observed C/2014 UN271 by detecting light from carbon monoxide gas in its atmosphere and thermal radiation when the comet was still distant from the sun.

Thanks to Alma’s exceptional sensitivity and resolution, scientists were able to focus on the very faint signals emitted from such cold and far-off objects.

Building on previous Alma observations that characterized the comet’s substantial nucleus size, the new findings measured the thermal signal to accurately assess the size of the comet and the dust surrounding its nucleus.

Their measurements for the nucleus size and dust mass are in line with earlier Alma observations, affirming it as the largest cloud comet ever identified.

Alma’s precision in measuring these signals enabled this research, providing a clearer understanding of this distant, icy giant.

“This discovery not only represents the first detection of molecular outgassing in a record-setting comet but also offers a rare glimpse into the chemical and dynamic processes of objects from the farthest reaches of the solar system,” the astronomer added.

“As C/2014 UN271 approaches the sun, we anticipate more frozen gases will start to evaporate, revealing further insights into the comet’s primitive composition and the early solar system.”

“Such discoveries help address fundamental questions about the origins of Earth and its waters, as well as the formation of life-supporting environments elsewhere.”

The team’s research paper was published in Astrophysics Journal Letters.

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Nathan X. Ross et al. 2025. Initial detection of molecular activity in the largest known OORT cloud comet: Alma Imaging of The Sun at C/2014 UN271 (Bernardinelli-Bernstein). apjl 986, L22; doi: 10.3847/2041-8213/add526

Source: www.sci.news

These Cosmic Beasts Are Sparkling the Largest Explosion Since the Big Bang

The immense void of space implies that only one star can occupy a region at a time.

This phenomenon occurs because the mass of these stars is 80 billion times lighter than Earth, with three colossal entities devouring stars ten times larger than our Sun.

A recent study from the University of Hawaii reveals that astronomers, while analyzing data from NASA and the European Space Agency, have identified three ultra-massive black holes. A gigantic one consumes stars far exceeding the sizes of those that orbit the center of our solar system.

The explosions reported by these researchers happened when the black holes tore apart and engulfed the remnants of these stars, yielding the largest events since the Big Bang that shaped our universe.

“What excites me about this research is that we are extending the boundaries of our understanding of the most energetic environments in the universe,” stated Anna Payne, a staff scientist at the Institute of Space Telescope Science and co-author, in a NASA article.

Black holes are cosmic entities that remain unseen by the naked eye, possessing a gravitational force so intense it can capture everything, including light itself. Supermassive black holes, the largest varieties, reside at the centers of galaxies, gradually consuming planets and other materials.

When a star falls under the influence of a supermassive black hole, new research published this week suggests it could end in a dramatic explosion categorized as an “extreme nuclear transient.”Journals advance in science

“These occurrences are unique as they provide the only means for us to illuminate a massive black hole that would typically remain dormant,” noted University of Hawaii graduate student Jason Hinkle in a related article from NASA.NASA article.

Hinkle serves as the lead author of a new study that documents two such events for the first time in the last decade.

Two of the three supermassive black holes were observed by ESA missions in 2016 and 2018, marking the first time they were documented. The third, cataloged as ZTF20Abrbeie, was discovered by the Caltech Observatory in California in 2020 and officially recorded in 2023.

The explosion’s magnitude rivals only that of the Big Bang, which initiated the universe.

Differing from typical stellar explosions, the variations in X-rays, optical, and ultraviolet emissions in these events indicated a “star-consuming black hole.”

NASA explains that black holes actually become brighter during these cosmic occurrences, with their luminosity lasting several months.

This brightness offers scientists a new methodology to uncover additional black holes in the far reaches of the early universe. As astronomers peer into the cosmos, the farther they look, the more ancient light they detect. For instance, light from the Sun takes eight minutes to reach Earth.

“You can use these three objects as a template for what to search for in the future,” Payne remarked.

Source: www.nbcnews.com

Trump Approves UAE Agreement for Construction of Largest AI Campus Outside the U.S.

The United Arab Emirates and the United States have formalized a Gulf State agreement to establish the largest artificial intelligence campus outside of the U.S., a key development during Donald Trump’s Middle East visit that included multiple AI-related deals.

Nevertheless, the agreement has sparked concerns due to previous administration restrictions based on fears that China could gain access to important technologies.

The deal to construct the campus will enable the UAE to enhance access to state-of-the-art AI chips. While the U.S. and UAE did not specify which AI chips would be featured in the data center, sources informed Reuters of a potential allowance for the UAE to import 500,000 of Nvidia’s most advanced AI chips annually starting in 2025.

Nvidia’s CEO, Jensen Huang, was seen on television talking with Donald Trump and UAE President Sheikh Mohamed bin Zayed Al Nahyan at the Abu Dhabi palace on Thursday.

This agreement marks a significant win for the UAE, as it navigates its long-standing relationships with allies while also engaging with China, its largest trading partner. The Gulf nation is investing billions to establish itself as a leader in AI. However, its ties with China have previously limited access to U.S. chips under the former Biden administration.

This transaction illustrates the Trump administration’s belief in its ability to securely regulate chip management by mandating that U.S. companies oversee their data centers.

While the U.S. has led in AI technology and innovation, China has recently become a formidable competitor. Despite Trump’s optimism, there are concerns that significant agreements with Gulf countries could diminish U.S. control over this rapidly growing technology, coupled with fears that China might leverage these data centers for its own advantages.

Leading CEOs from AI and semiconductor firms, including OpenAI’s Sam Altman and Nvidia’s Huang, seem supportive of such transactions, as they present opportunities to showcase their products on a global scale and derive substantial benefits.

According to the White House, the AI contract encompasses investment, construction, and funding in U.S. data centers that match the scale of those in the UAE.

“The agreement also commits the UAE to align its national security regulations more closely with those of the United States.

The focal point of the announced contract is a 10-square-mile (25.9 square kilometers) AI campus in Abu Dhabi, boasting a capacity of 5 gigawatts for AI data processing.

The campus will be developed by G42, a company backed by Abu Dhabi, but U.S. Secretary of Commerce Howard Lutnick stated that “U.S. companies will manage data centers and supply American-managed cloud services throughout the region.”

In a U.S. fact sheet, Qualcomm, a chip manufacturer involved in AI engineering centers, noted that Amazon Web Services, the cloud division of the technology and commerce firm, will collaborate with local partners to enhance cybersecurity and cloud integration.

Historically, the U.S. pursued protective measures to limit China’s access to advanced semiconductors.

Regulations are being relaxed under Trump, and AI Czar David Sacks informed Riyadh on Tuesday that the Biden administration’s export controls “are not intended to include friends, allies, or strategic partners.”

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Granting the UAE access to cutting-edge chips made by companies like Nvidia signifies a substantial change.

“This transition will enable the UAE to strengthen its technological partnership with the U.S. while sustaining trade relations with China,” said Mohamed Soliman, a senior fellow at the Middle East Institute.

“It doesn’t imply a severance from China; rather, it reflects a reorientation of our technology strategy to adhere to U.S. standards and protocols, especially in key areas like computing, cloud computing, and semiconductor supply chains,” he stated.

AI was a key topic when Bin Zayed Al Nahyan visited Washington on the last day of Biden’s administration.

G42 and MGX, the state-affiliated entities spearheading the UAE’s AI investment initiative, have also invested in U.S. firms such as OpenAI and Elon Musk’s Xai, while Microsoft committed $1.5 billion to G42 last year.

The companies indicated that the agreement was bolstered by security guarantees, and under U.S. influence, G42 has started dismantling previous Chinese hardware and divesting from Chinese investments.

Nonetheless, Chinese firms like Huawei and Alibaba Cloud continue to operate in the UAE, and the flow of AI chips to China has been monitored by various nations, including Malaysia, Singapore, and the UAE, according to sources who spoke with Reuters in February.

Source: www.theguardian.com

The world’s largest lithium reserves are at risk due to water shortages

Freshwater essential for lithium mining is found in parts of Argentina, Bolivia, and Chile, situated in the world’s “lithium triangle” on the Andean plateau, boasting half of all global lithium reserves.

A recent study in Communications Earth and the Environment revealed that available freshwater for lithium extraction in these regions is significantly lower than previously believed. With global demand for lithium expected to surge by 2040, this poses a challenge as it surpasses the limited annual rainfall supplying water to the dry lithium triangle.

Minimizing freshwater usage in the lithium industry is crucial to prevent disruption in mining activities. Extracting one ton of lithium requires approximately 500,000 gallons of water, which also sustains small indigenous communities and unique wildlife habitats in the region.

Water scarcity affects both the ecosystem and the industry in the lithium triangle, as lithium is a key component in batteries driving the global shift towards clean energy technologies. Despite the projected quadrupling demand for lithium batteries by 2030, delays in mining operations due to resource availability raise concerns about meeting this growing demand.

Freshwater plays a vital role in determining the supply of lithium available for mining in the lithium triangle. Rainfall washes lithium-rich minerals out of rocks, creating lagoons filled with lithium-rich water where mining companies extract the mineral. However, limited weather data and overestimation of freshwater supply in the region pose challenges to sustainable mining.

Research into water and resource availability for lithium mining operations is ongoing, emphasizing the need for a comprehensive understanding of the entire lithium supply chain. Studies in lithium-rich regions worldwide are essential to grasp the environmental and social impacts of lithium extraction.

Source: www.nbcnews.com

Scientists warn that volcanoes near Alaska’s largest city may erupt in the next few weeks or months

Anchorage, Alaska – Volcanoes near Alaska’s biggest city show new signs of anxiety. Experts say the likelihood of an eruption in Mount Spall is increasing in the coming weeks or months.

The Alaska Volcanic Observatory said Wednesday it measured “a significant rise in volcanic gas emissions” during recent turbulence, with the signs indicating that the eruption was not certain in weeks or months, but not certain.

“We hope for more seismic activity, gas emissions and surface heating before the eruption. “Such strong anxiety could provide additional warnings for days to weeks.”

What is Mount Spur?

It is an ice-covered volcano about 80 miles northwest of Anchorage, 11,070 feet high.

Mount Spur is one of Alaska’s 53 volcanoes and has been active within the last 250 years. There are two main vents.

When did Mount Spur last erupt?

The last known eruption from the Summit Bent was over 5,000 years ago. Meanwhile, Crater Peak Vent erupted once in 1953 and three times in 1992. Crater Peak Vent is about two miles south of the summit.

Since then, there have been periods of increasing earthquakes and other activities between 2004 and 2006, but no other eruptions. Last October, the observatory raised the green to yellow mount spur alert status when seismic activity increased significantly and ground deformation was discovered in satellite data.

The most likely outcome of current anxiety would be the eruptions or eruptions of 1953 and 1992, the observation deck said.

But “there is a possibility that there will be no eruptions, current activity will die slowly, or even smaller eruptions may occur,” wrote John Power, a geophysicist at the station’s US Geological Survey, in an email.

What are the effects of the eruption?

According to the observation deck, eruptions of the last century lasted three to seven hours, rising more than 50,000 feet above sea level, producing ash columns deposited ashes in communities in southern Alaska.

In 1992, about a quarter inch of ash from the anchorage began to stay inside or wear masks if they were to go outside to avoid breathing the ashes. The clouds drifted all the way to Greenland.

Volcanic ash is angular and sharp, and is used as an industrial abrasive. Powdered rocks can shut down the jet engine.

The 1992 eruption prompted temporary closures of airports in Anchorage and other communities.

In states where most communities are not connected to Alaska’s main road system, closing airports is more than inconvenient. Ted Stevens Anchorage International Airport is one of the busiest cargo hubs in the world.

Source: www.nbcnews.com

Amazon purchases UK’s largest electric truck to decrease carbon footprint

Amazon is set to deploy nearly 150 electric heavy goods vehicles in the UK to reduce carbon emissions from its delivery operations. The company has purchased over 140 electric Mercedes-Benz HGVs and eight Volvo trucks, marking the UK’s largest order for electric trucks. These vehicles will join Amazon’s fleet over the next 18 months, increasing its current electric HGV fleet from nine vehicles.

The switch to electric logistics is being supported by government funding under the Zero Emission HGV and Infrastructure Demonstrator Program (ZEHID). Amazon plans to set up fast-charging points across its UK network to keep its electric trucks operational.

Amazon’s investment in green transport is part of a £300m initiative announced in 2022 to increase its electric HGV fleet to 700 vehicles by 2025. However, challenges such as a lack of public infrastructure, high costs, and range concerns are hindering the industry-wide transition to electric HGVs.

Amazon Logistics European vice president Nicola Fyfe stated that the company’s commitment to electric vehicles aligns with its goal of achieving net zero carbon emissions by 2040. The move includes large-scale deliveries by rail and foot in city centers, expanding Amazon’s green delivery options.

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Amazon’s shift towards electric vehicles represents a significant step in its sustainability efforts and commitment to reducing its environmental impact.

Source: www.theguardian.com

20 Simple Steps to Enhance Your Health: Findings from the Largest Study of 2024

If you are not only keeping up with the health news of this year, but also following all its recommendations, you are on your way to a truly healthy life.

First, you have probably adjusted your eating habits. Maybe you have been motivated to go vegan after reading an article that claims a diet can reverse your biological age in just eight weeks, or because scientists have found that in combination with exercise, weight loss can be achieved. You might have experimented with intermittent fasting.

You could have opted for a Mediterranean diet to keep your brain young, or increased your fiber intake to make up for a deficiency that most people supposedly have, according to scientists.

Adopting a vegan diet for just 8 weeks can change DNA methylation patterns and reduce biological age – Image credit: Getty Images

It is equally possible that conflicting evidence has led you in a different direction. After all, one study linked intermittent fasting to a 91 percent higher risk of cardiovascular death, and another warned of cancerous mutations during the post-fasting eating period. Several major studies are also reconsidering calorie restriction as the best way to extend lifespan.

Even the negative reputation of ultra-processed foods was a topic of debate. One study showed that avoiding ultra-processed foods reduced the risk of cognitive decline by 12 percent, but a 30-year Harvard University study suggested that ultra-processed foods are not as harmful as we believe.

If you have given up on your diet altogether, we don’t blame you. Ultimately, it was the new weight-loss medications, including those initially in pill form and an alternative to Ozempic that does not cause muscle loss, that gained significant attention.

Early indications of “exercise drugs” brought hope even to those who are unable to be physically active. While some researchers were encouraged by two studies suggesting that walking alone can improve cardiovascular health and reduce back pain, others found that just one exercise session per week could reduce cognitive decline by 13 percent.

More than 50% of men will be bald by the age of 50. A breakthrough in 2024 could change things – Image courtesy of Getty

Scientists claim that the anti-aging solution is within our bodies, as they have discovered that white blood cells can be reprogrammed to target and eliminate senescent cells. Elsewhere, the Atlas of Aging explains why our muscles weaken as we age and how this process can be halted.

Furthermore, a British study found that a simple intervention dramatically reduced peanut allergy rates by 71 percent.

Meanwhile, new possibilities have emerged in the field of hair removal after researchers revealed that a naturally occurring sugar in the human body can help treat male pattern baldness.

In the medical field, a new breath test that can detect lung cancer early is showing promise, and an Irish research team believes they have developed a way to vaccinate against eczema.

Researchers have developed a respiratory sensor that can detect early signs of lung cancer by identifying specific chemical changes, providing a simple, non-invasive screening method – Image courtesy of Getty Images

In positive news, a survey reveals that life is not solely about money. Some of the world’s poorest regions, which rely on nature rather than income, reported higher life satisfaction scores than countries at the top of the World Happiness Index (such as Finland, Denmark, and Iceland).

There was also one health news item that did not offer any new information. It is already known that spending time with dogs can increase your sense of well-being and brain wave activity. We certainly take that advice to heart…or head to the park to play.

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Source: www.sciencefocus.com

The World’s Top Ten Largest Statues

Statues serve various purposes, from honoring historical events and celebrities to expressing devotion to religious figures. But have you ever wondered about the world’s largest statue?

There are numerous remarkable landmarks worldwide, such as the Statue of Liberty in New York (43 meters tall), Michelangelo’s David (5 meters tall), and Christ the Redeemer in Rio de Janeiro. However, these installations pale in comparison to some of the largest statues on the planet.

So, how tall are the world’s largest statues, and where can you find them? Here are the top 10 largest statues globally, sorted by height.

10. Kitanomiyako Park Daikannon – Ashibetsu City (88m)

Hokkaido Daikannon in Ashibetsu City, Hokkaido. Photo provided by: Akiyoshi Matsuoka/Wikipedia

The Great Kannon in Kita no Miyako Park is a statue dedicated to the Bodhisattva Kannon, an important figure in Buddhism associated with compassion and mercy. In traditional Chinese Buddhism, Guan Yin is represented as a man. However, in Japanese culture, God is considered to be female and is depicted as such in artwork and sculptures.

The construction of the statue was completed in 1989, and until 1991, it was the tallest statue globally. This statue is one of many erected across Japan by affluent benefactors during the 1980s financial boom. Many of these statues have since deteriorated, and some have been demolished.

9. Sendai Daikannon – Sendai City (92m)

Photo provided by: Hideyuki Kamon/Wikipedia

The next spot on our list is occupied by another similar statue depicting the Great Kannon. This version was erected in Sendai City in 1991 and briefly held the title of the world’s tallest statue.

In this depiction, the Great Kannon holds the Cintamani Stone, a wish-fulfilling gemstone present in both Buddhism and Hinduism.

8. Thai Big Buddha – Angthong, Thailand (92m)

The Thai Big Buddha, located at Wat Muang Monastery in Ang Thong province, also known as the Big Buddha or Mahamin Sakayamnee Viseychaichang, is one of the largest Buddha statues in Thailand. Photo credit: Getty Images

The Great Buddha of Thailand, officially known as Phra Putta Mahanawamintra Sakayamnee Sri Viseichaichang, is not just towering but also impressively wide at 63 meters. The statue’s construction spanned 18 years, completed in 2008.

This seemingly extravagant statue is actually made of concrete painted in gold. Local Buddhists funded the £2.2 million needed to build the Big Buddha through donations.

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7. Mother of all Asia – Pagquilatan, Philippines (98.15m)

Photo credit: Arnold RA Gutierrez/Wikipedia

The “Mother of All Asia” statue represents the world’s tallest Virgin Mary, symbolizing peace and unity. Situated at the Monte Maria International Pilgrimage and Conference Center in Batangas City, Philippines, the statue was finalized in 2021.

Compared to the other statues on our list, this statue is relatively simple yet equally striking. The interior includes a chapel, theater, shops, food hall, living spaces, and the Basilica of Pope John Paul II.

6. Kameyama Guanyin – Hunan, China (99m)

Stairs going up to the Guishan Guanyin statue in Hunan Province, China. Photo courtesy: Huangdan2060/Wikipedia

To reach the Kameyama Thousand-Armed Kannon Statue, one must ascend numerous steps at the Meiyin Temple, a Zen Buddhist temple in Weishan, China.

Your reward upon reaching the top is a gold-plated bronze monument depicting the manifestation of the Bodhisattva Kannon, known as Shigian Senju Kannon. The statue was finalized in 2009, costing approximately £28 million.

5. Ushiku Daibutsu – Ushiku City (100m)

Ushiku Daibutsu statue in Ushiku City. Photo credit: Getty Images

Completed in 1993, the Ushiku Daibutsu Buddha statue was once the tallest worldwide for 15 years. The statue houses an elevator that transports visitors to an 85-meter observation deck for spectacular views. It is also considered the heaviest statue ever constructed, weighing over 4,000 tons.

This bronze monument commemorates the birth of Shinran, an influential Japanese monk who established the Shin sect of Buddhism, the most widely practiced sect in Japan.

4. Vishwas Swaroopam – Nathdwara, India (106m)

Hindu god Lord Shiva with Shiva Linga symbol photographed in Nathdwara, India. Photo credit: Getty Images

Vishwas Swaroopam, also known as the devotional statue, portrays the Hindu god Shiva meditating peacefully overlooking the Indian countryside near Nathdwara in Rajasthan, India. It is the tallest Shiva statue globally.

Constructed from copper-clad concrete, the statue was completed in 2020 and opened to the public in 2022. The building includes elevators that transport visitors to various viewing points along with an exhibition hall.

3. Lekyun Sekkya – Katakan Town, Myanmar (116m)

The giant Lekyun Sekya Buddha statue lies near Monywa, Myanmar. Photo credit: Getty Images

Featuring a unique design, the Rakhikyun Sekhya Buddha statue alternates between depicting Gautama Buddha in two states: “Pari Nirvana” and Buddhist scenes. This statue rests on a large platform in the village of Katakan Taung, Myanmar, and was completed in 2008, briefly holding the title of the world’s tallest statue before being surpassed.

2. Spring Temple Buddha – Henan, China (128m)

Buddha statue at Spring Temple in Henan Province, China. Photo provided by: Nyx ​​Ning/Wikipedia

The world’s tallest Buddha statue is situated in Zhaocun Town, Lushan County, China, portraying the Cosmic Buddha or Dainichi Nyorai in the lotus position. It is known as the “Spring Temple Buddha” due to its proximity to a renowned hot spring with healing properties.

Completed in 2008, this statue held the title of the world’s tallest bronze statue for a decade.

1. Statue of Unity – Gujarat, India (182m)

Indian police officers stand guard near the world’s tallest Statue of Unity in the western Indian state of Gujarat. Photo by Sam Pansaky/AFP/Getty Images

Standing at a towering height of 182 meters, the Statue of Unity in Kevadia, India, claims the title of the world’s tallest statue. It surpasses Big Ben’s height twofold and exceeds the Statue of Liberty’s height by over three times.

This statue immortalizes Sardar Vallabhbhai Patel, the Indian independence leader who served as the first Deputy Prime Minister and Home Minister post-independence in 1947.

To obtain some of the iron required for this remarkable monument, located near the Narmada dam as part of a larger complex, local farmers were urged to donate tools.

position Statue name statue height (meter) position
1 statue of unity 182 India
2 Shunji Daibutsu 128 China
3 Rekyunsekya 115.8 myanmar
4 Vishwas Swaroopam 106 India
5 Ushiku Daibutsu 100 Japan
6 Kameyama Kannon 99 China
7 mother of all asians 98.15 Philippines
8 big buddha in thailand 92 Thailand
9 Sendai Daikannon 92 Japan
10 Kitanomiyako Park Daikannon 88 Japan

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Source: www.sciencefocus.com

47 million years ago, the world’s largest earthworm lizard roamed Earth

Paleontologists have described a new genus and species of the trogonophid Amphisbaenian (worm lizard) from fossil specimens discovered in Tunisia.

rebuilding the life of Terrastiodontosaurus Marcelo Sanchesi Ready to prey on large snails of the Brimulidae family. Image credit: Jaime Chirinos.

Terrastiodontosaurus Marcelo Sanchesi They lived in what is now Africa during the Eocene epoch, about 47 million years ago.

The new species belongs to Trogonophidae, a small family of limbless carnivorous lizard-like reptiles belonging to the clade Amphisbaenia.

“Amphibians are a group of charismatic fossil squamates with bizarre morphological features and extreme anatomical variations,” said lead author Dr. Georgios Georgalis of the Institute of Animal Systemology and Evolution, Polish Academy of Sciences and his colleagues. said a colleague.

“In particular, its unique skeletal structure has fascinated and puzzled researchers since the 19th century.”

“Before the advent and widespread acceptance of phylogenetics, amphibians were considered to be the third major group of squamates, along with Serpenta and the paraphyletic 'Lacerthilla'.”

“However, recent phylogenetic analyzes place them as a sister group to lizards in the family Caricidae, and this topology is supported by both molecular evidence and a combination of morphological and molecular evidence. The name Lacertibaenia has also been proposed for the clade Amphisbaenia + Lacertidae.

“Amphibians have a relatively rich fossil record spanning the Cenozoic era in Europe and North America, in addition to several Neogene and Quaternary occurrences from South America and some from Africa. Paleogene, Neogene, and Quaternary productions, very few Neogene productions from the Arabian Peninsula, and very few Neogene occurrences from southwest Asia. is. ”

“Trogonophidae is a fairly distinctive group of amphibians that is today distributed across northern and north-central Africa (including Socotra Island in Yemen) and the Middle East,” the researchers added.

“Currently, four extant genera are recognized. Agamodon, Diplometopon, Pachykaramasu, and the type genus, Trogonophis

The most distinguishing feature of trogonophids is their hooked teeth, a feature found only among squamates in the otherwise Iguanian group Chronophytes. ”

“Trogonophids have other unique features among amphibians, including locomotion and burrowing patterns, shoulder girdle or hemipenes morphology, chromosomes, spinal arrangement, lack of caudal autodissection, and triangular cross-section. It also has features.

some specimens Terrastiodontosaurus Marcelo Sanchesi It was discovered in a place where fossils of Jebel Chanbi Nature Park In Tunisia.

“Jebel Chambi National Park is located in the Kasserine region of central-western Tunisia,” the paleontologists said.

“Material for this study was obtained from a fossiliferous site (Chambi locus 1) consisting of fluvial-lacustrine deposits located at the base of the Chambi continental sequence.”

“These habitats support fish, amphibians, turtles, crocodiles, squamates, birds, and mammals such as bats, primates, euphorians, hyaenodonts, hyracoids, elephant shrews, marsupials, and mammals. It produces a diverse population of aquatic and terrestrial vertebrates, including rodents and sirenians.

Terrastiodontosaurus Marcelo Sanchesi At over 90 centimeters (35 inches) long, it was the largest amphibian ever known.

“Among the extant amphibian fliers, Amphisbaena Alba is the largest species, reaching a maximum total length of 81 centimeters (32 inches) and a skull length of more than 3.1 centimeters (1.2 inches), the researchers said.

Virtually all modern amphibians are burrowing animals and rarely appear on the surface outside of underground environments.

Nevertheless, certain features Terrastiodontosaurus Marcelo Sanchesi They seem to contradict this natural history pattern and instead suggest that ancient species likely lived on the surface of the earth.

This is further supported by the extreme size. Terrastiodontosaurus Marcelo Sanchesi which makes underground habits less likely to occur.

Terrastiodontosaurus Marcelo Sanchesi “This is a significant contribution to the fossil record of the hitherto little-known African Amphisbaenia, making it only the fifth species to be named extinct on the African continent,” the scientists concluded. .

“Furthermore, the new material from Chambi further adds to the extremely poor fossil record of the Trogonophidae.”

Regarding new species, paper this week, Zoological journal of the Linnean Society.

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Georgios L. Georgalis others. 2024. The world's largest earthworm lizard: a new giant trogonophid (Squamata: Amphisbaenia) with extreme dental adaptations from the Eocene of Chambi, Tunisia. Zoological journal of the Linnean Society 202 (3): zlae133;doi: 10.1093/zoolinnean/zlae133

Source: www.sci.news

The top 10 largest volcanic eruptions in the world, ranked by devastation

Volcanoes have been responsible for some of the most awe-inspiring and deadliest natural disasters in history, from the destruction of Pompeii by Mount Vesuvius in 79 AD to the devastating eruption of Eyjafjallajokull in 2010.

There are more than 1,500 active volcanoes around the world, with one eruption occurring on average every week. But which of these eruptions are the most powerful?

Today, we have the ability to observe and measure volcanic eruptions with much more accuracy than in the past. Using the Volcanic Explosivity Index (VEI) and the Dense Rock Equivalent Scale (DRE), we can compare the strength and destructive power of different volcanoes.

10. Mount St. Helens (1980) – VEI 5, DRE 0.5km3

Eruption of Mount St. Helens and Mount Hood, Washington, USA, photographed during the May 1980 eruption. Photo courtesy of Getty Images

Deaths: 57

In the morning of May 18, 1980, Mount St. Helens erupted explosively. Signs of magma movement had been observed for months prior, but the magnitude of the explosion still took many by surprise. The eruption produced blast winds of up to 1,080 km/h and devastated everything in a 600 km² radius within minutes, making it the most destructive volcanic eruption in U.S. history.

9. El Chichon (1982) – VEI 5, DRE 1.1km3

El Chichon volcano spews a column of ash and steam high into the sky above the evacuated town of El Volcan, Mexico, in March 1982. Photo by Getty Images

Estimated deaths: 1,900

El Chichon volcano in Chiapas, Mexico, erupted in 1982 after over 600 years of dormancy, catching many off guard. A deadly pyroclastic flow and sulfur dioxide emissions caused significant damage and casualties near the volcano.

8. Mount Hudson (1991) – VEI 5, DRE 1.6-2.7km3

Aerial photo of Mount Hudson Volcano taken on August 23, 1991. Photo by Norm Banks/US Geological Survey/Wikipedia

This massive eruption not only reduced Mount Tambora's elevation by a third, but also spewed huge amounts of ash and gas into the atmosphere, blocking out the sun.

In the long term, this led to massive food shortages worldwide, with 1816 becoming known as “the year without a summer.” It is estimated that at least 71,000 people ultimately died of starvation as a result of the eruption.

Volcano year V.I. Deaths (number
1 Tambora, Indonesia 1815 7 71,000 (estimated)
2 Novarupta, Alaska, USA 1912 6 0
3 Krakatoa, Indonesia 1883 6 36,600 (estimated)
4 Santa Maria, Guatemala 1902 6 7,000 – 13,000 (estimated)
5 Pinatubo, Philippines 1991 6 1,202
6 Hunga Tonga – Tonga, Hunga Ha'apai 2022 5.7 6
7 Kisap, Chile 1932 5 0
8 Mount Hudson, Chile 1991 5 0
9 El Chichon, Mexico 1982 5 1,900 (estimated)
10 Mount St. Helens (USA) 1980 5 57

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Source: www.sciencefocus.com

The South American lungfish has the largest genome ever sequenced to date.

Researchers from the University of Konstanz and other institutions Africa(Protopterus annectens) and South American lungfish (Lepidosiren paradoxa)The genome of the South American lungfish (approximately 91 gigabases, about 30 times the size of the human genome) is the largest animal genome sequenced to date. Australia(Neoceratodus forsteri) African lungfish.

South American lungfish (Lepidosiren paradoxaImage courtesy of Katherine Seghers, Louisiana State University.

Lungfish are freshwater vertebrates belonging to the order Dipnoi (Pulmonaceae) and have existed for 400 million years, from the Devonian to the present day.

Some people consider lungfish to be “living fossils” because their morphology has changed very little over the years.

They, like all terrestrial vertebrates, have the ability to breathe air through lungs similar to our own.

Only six species of lungfish remain today: four live in Africa, one in South America, and one in Australia.

“These ancient 'living fossils' still resemble their ancestors so closely that they seem to have been forgotten during evolution,” said biologist Axel Meyer of the University of Konstanz and his colleagues.

“Since our genetic material, DNA, is made up of nucleobases and the sequence of these nucleobases contains the actual genetic information, a comparative analysis of the lungfish genome will only be possible if we know its complete sequence.”

“We already knew that the lungfish genome was large, but until now it was unclear how large it really was and what we could learn from it,” the researchers added.

“Sequencing the lungfish genome has therefore been very labor-intensive and complex, both from a technical and bioinformatics point of view.”

In a new study, scientists have sequenced the genome of African and South American lungfish.

“The South American species' DNA is 91 gigabases (or 91 billion bases), the largest of any animal genome and more than twice the size of the genome of the previous record holder, the Australian lungfish,” Dr Meyer said.

“Eighteen of the South American lungfish's 19 chromosomes are each larger than the entire human genome, about 3 billion base pairs in length.”

The largest genome sequence to date, that of the Australian lungfish, was also sequenced by the same team.

“Autonomous transposons are responsible for the large size of the lungfish genome over time,” the authors write.

“These are DNA sequences that are 'replicated' and change position in the genome, which causes the genome to grow.”

“Although similar phenomena have occurred in other organisms, our analysis shows that the South American lungfish has by far the fastest rate of genome expansion ever recorded; every 10 million years, its genome has expanded to a size equivalent to the entire human genome.”

“And it continues to grow. We now have evidence that the transposon responsible is still active.”

“We have identified a mechanism for this enormous genome growth. This extreme expansion is due, at least in part, to the very low presence of piRNAs.”

“This type of RNA is normally part of the molecular mechanism that silences transposons.”

Team paper Published in the journal Nature.

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M. Chartres othersAll lungfish genomes provide information on genome expansion and tetrapod evolution. NaturePublished online August 14, 2024, doi: 10.1038/s41586-024-07830-1

Source: www.sci.news

The largest sequenced genome is 30 times larger than the human genome

South American lungfish probably has a lot of 'junk' DNA

Katherine Segers/Louisiana State University

The largest sequenced genome on record, containing 90 billion DNA letters, belongs to a South American lungfish.

“Obviously, making this happen was a technical challenge,” he said. Axel Meyer “This is the largest animal genome ever found,” said researchers from the University of Konstanz in Germany.

South American lungfish (Lepidosiren paradoxaThere are two copies of the human genome, with a total of 180 gigabases (Gb) of DNA, which would stretch to 55 metres if laid out in a line – 30 times the amount of DNA found in a single human cell (6 Gb).

The South American lungfish has 19 chromosomes, 18 of which are larger than a single copy of the human genome, Meyer said.

His team also sequenced a single copy of the 40 Gb African lungfish genome (Protopterus annectens), the researchers have now sequenced all six species of lungfish found around the world, all of which have unusually large genomes.

“It's really puzzling how these fish can tolerate such large genomes,” Meyer says. The nucleus in each cell must be very large to accommodate so much DNA, meaning each cell is larger than normal, he says. Replicating that much DNA also requires a lot of energy with each cell division.

There's no evidence that this extra DNA does anything useful. Rather, it appears to be the result of a “genetic parasite” replicating itself endlessly. It's probably mostly junk, Meyer says.

His team found that mechanisms that other organisms use to limit the spread of genetic parasites appear to be damaged or missing in all lungfish species, resulting in the South American lungfish genome growing by 3.7 Gb every 10 million years – more than one copy of the human genome.

The reason for sequencing all lungfish species is to get a better understanding of what their common ancestor was like, a close relative of the lungfish that evolved into the first tetrapod land animal.

“Of all fish, lungfish are our closest relatives,” Meyer says. As their name suggests, lungfish breathe air and would drown without it.

They can also live for more than 100 years and regrow fins and tails, Meyer said, and his team hopes to figure out how they do this.

Some plant genomes are even larger than that of the South American lungfish: a small fern found on several Pacific islands is thought to have 321 Gb of DNA per cell, but there are no plans to sequence it.

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Source: www.newscientist.com

Scientists may finally have discovered the cause of the largest space explosion in history

Gamma-ray bursts occur when massive stars collapse or collide.

NASA Goddard Space Flight Center/ A. Simonett, Sonoma State University

The most powerful explosion astronomers have ever seen contains a mysterious signal they thought couldn't exist. The signal provides the first detailed look inside a gamma-ray burst and suggests it involves the annihilation of matter and antimatter.

Gamma-ray bursts (GRBs) are the most powerful outbursts of radiation in the universe, produced by cosmic explosions and collisions. Physicists believe that the most energetic GRBs are produced when a star collapses to form a black hole. The black hole produces a jet of material traveling close to the speed of light, penetrating the collapsing star and emitting an explosion of radiation that can be observed on Earth. However, we still don&#39t know how this radiation is produced or what is contained in the jet.

Much of this mystery arises from the spectrum of light we can see: while the light observed from other objects in the universe contains characteristic spikes that tell us about the specific atoms or other matter that produced this burst of energy, the spectrum of light from a gamma ray burst is always smooth and featureless.

In the 1990s, researchers became excited about the possibility that some GRBs might show distinct lines, but careful analysis showed that these were statistical errors and concluded that GRB spectra could not possibly be spike-like.

now, Maria Ravasio Researchers from Radboud University in the Netherlands and their colleagues have discovered that GRB221009A, discovered in 2022 and dubbed the most luminous explosion since the Big Bang, actually has an energy peak of about 10 megaelectronvolts.

“When I first saw the lines, I thought we&#39d done something wrong,” Ravasio says. But after detailed statistical analysis and ruling out any instrument problems, Fermi Gamma Ray Space Telescope Ravasio and his colleagues concluded that the spectral spike was real: “When I realized it wasn&#39t a false alarm, I got goosebumps because I realized something big had happened.”

Nearly all GRBs exhibit a similar energy distribution, so astronomers analyze new GRB detections using the data analysis method that best suits this pattern. But Ravasio and her team instead used a method that allows for peaks, and found that this fit the data better. “That part of the GRB spectrum has been the same for years, and no one had looked at it,” Ravasio says. [GRB221009A] We can now look at that part of the spectrum better.”

This peak points to a specific physical process behind GRBs that is missing from the best models of GRBs.

To zero in on what this could be, Ravasio and his colleagues worked under the assumption that because the jet&#39s energy was so high, there were no intact atoms in it. This left one plausible explanation: the annihilation of an electron and its antimatter counterpart, a positron. Such an annihilation produces gamma rays with a distinct peak at 511 kiloelectron volts. “This already tells us the composition of the jet, which is something we haven&#39t understood since the first GRB,” Ravasio says.

The higher 10 MeV peak that the researchers observed was due to a shift in the energy spectrum caused by the high-speed jet producing the radiation, similar to how the siren of an approaching ambulance sounds higher-pitched.

This difference allowed them to calculate the speed of the jet that produced the burst, which was traveling at 99.99 percent of the speed of light.

The discovery of GRBs with their distinctive lines is “one of the biggest surprises in our field in more than a decade,” he said. Eric Burns At Louisiana State University.

Barnes, who helped analyze the original data that led to the discovery of GRB221009A, was presenting his results at a conference with his colleagues when he heard about Ravasio&#39s findings. “Nobody thought the paper was right,” Barnes says. “We read the title and all thought, 'This is wrong. It can&#39t be right.'”

But the analysis conducted by Ravasio and his colleagues appears to be correct, he says. “It&#39s pretty surprising, because we were so sure that gamma-ray bursts don&#39t have lines, that we didn&#39t look for this, and so we missed this completely,” Burns says.

Other GRBs may have similar spectral peaks and be worth searching for, but the peak was only observed because it came from the most luminous GRB on record, Burns said.

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Source: www.newscientist.com

Lunar samples shed light on the formation of the Moon’s largest crater

Lunar samples collected by NASA's Apollo missions continue to enable new discoveries.

NASA/ESA

The Moon's largest crater is thought to have formed 4.338 billion years ago when a huge rock struck the lunar surface, leaving behind a swirling pool of magma, suggesting that Earth was experiencing extreme cosmic upheaval at the same time.

Chemical analysis of tiny zircon crystals found in lunar samples revealed that many of them solidified from magma about 4.3 billion years ago, but without measuring whether they all formed at precisely the same time, there was no way to know for sure whether many small impacts or one giant one melted the lunar crust into magma.

Melanie Balboni Balboni and her colleagues at Arizona State University solved this problem by measuring with extreme precision the ages of 10 zircon crystals that were brought back to Earth as part of NASA's Apollo missions. “To do this kind of dating, you have to melt the zircon,” Balboni says. “The lunar material is so precious, and there are so few reliable labs in the world that can do that, so no one has dared to do it. When I first did it, I was so scared.”

The researchers found that the crystals all formed at the same time, 4.338 billion years ago, which indicates that they likely formed in one giant impact. The same impact that created these crystals probably also formed the South Pole-Aitken Basin, the largest crater on the Moon, unless that impact crater was subsequently obscured by shifting sand or other impactors, Balboni says.

Not only is this a pivotal event in the history of the Moon, but it also tells us something about the space environment on Earth at that time. “The Moon is a very small object compared to Earth, so it was very likely that something very big struck Earth at that time,” Balboni said. “That big rock could have left behind cosmic gifts, like water, that might have helped the birth of life.”

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Source: www.newscientist.com

Explore the inner workings of the world’s largest nuclear fusion experiment

Tokamak’s 30-metre deep assembly pit

©Enrico Sacchetti

Huge in scale and ambition, ITER is a €20 billion energy project being built in the south of France that will pave the way for nuclear fusion power similar to the sun’s energy source.

The world’s largest nuclear fusion experiment was launched in 2006 by an international effort involving the European Union, the United States, China, and Russia. The reactor’s first operation, which will create an extremely hot substance called plasma (the conditions needed for nuclear fusion), is scheduled for 2020. The plan was initially postponed to 2025, and new delays have now pushed it to 2035.

on the other hand, Enrico Sacchetti It offers a glimpse into ITER’s construction and potential.

One of the toroidal coils

©Enrico Sacchetti

The main image shows the 30-metre deep dimensions of the tokamak’s assembly pit, a device that uses magnetic fields to confine swirling plasma inside a doughnut-shaped torus: Above is a shot of one of the toroidal coils that generate these magnetic fields.

The image below shows some of the nine sectors that make up the ITER vacuum vessel, which weighs 5,200 tonnes and acts as an extremely durable “cage” for the experiments, keeping the continuously swirling plasma from touching its walls.

Vacuum vessel being transported for repairs

©Enrico Sacchetti

The top image shows part of the vacuum vessel being transported for repair, while the bottom photo shows the supports that line the back of the blanket module’s wall, which protects the structure and magnets from the heat and high-energy neutrons of the reaction.

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Astronomers find intermediate-mass black hole in largest globular cluster in Milky Way

Using more than 500 images from the NASA/ESA Hubble Space Telescope, astronomers have found evidence of a 20,000-solar-mass black hole at the center of Earth. Omega CentauriIt is a globular cluster located in the constellation Centaurus, 5,430 parsecs (17,710 light years) from the Sun.

Omega Centauri is about 10 times more massive than other large globular clusters. Image credit: NASA / ESA / Hubble / Maximilian Häberle, MPIA.

Astronomers know that stellar-mass black holes (black holes with masses between 10 and 100 times that of the Sun) are the remnants of dying stars, and that supermassive black holes, with masses more than a million times that of the Sun, exist at the center of most galaxies.

But the universe is littered with what appear to be more mysterious types of black holes.

These intermediate-mass black holes, with masses between 100 and 10,000 times that of the Sun, are so difficult to measure that their very existence is sometimes debated.

Only a few intermediate-mass black hole candidates have been discovered so far.

Determining the black hole population is an important step towards understanding the formation of supermassive black holes in the early universe.

“Omega Centauri is a special example among globular clusters in the Milky Way,” said astronomer Maximilian Höberle of the Max Planck Institute for Astronomy and his colleagues.

“Omega Centauri is widely accepted to be the stripped core of an accreted dwarf galaxy due to its high mass, complex stellar population and kinematics.”

“These factors, combined with its proximity, make the planet a prime target in the search for intermediate-mass black holes.”

Omega Centauri is made up of about 10 million stars, making it about 10 times more massive than any other large globular cluster.

In the study, the authors measured the velocities of 1.4 million stars from images of the cluster taken by the Hubble Space Telescope.

Although most of these observations were intended for calibration of Hubble's instruments rather than for scientific use, they proved to be an ideal database for the team's research activities.

“We looked for fast-moving stars that are expected to be near concentrated masses such as black holes,” said astronomer Holger Baumgart of the University of Queensland.

“Identifying these stars was the smoking gun we needed to prove the existence of black holes, and we've done just that.”

“We found seven stars that shouldn't be there,” Dr Hebel said.

“They're moving so fast that they're likely to escape the herd and never come back.”

“The most likely explanation is that a very massive object is gravitationally tugging on these stars, keeping them near the center.”

“The only objects this massive are black holes, which have a mass at least 8,200 times that of the Sun.”

“This discovery is the most direct evidence to date for the presence of an intermediate-mass black hole at Omega Centauri,” said Dr Nadine Neumayer, an astronomer at the Max Planck Institute for Astronomy.

“This is extremely exciting because very few other black holes with similar masses are known.”

“The black hole at Omega Centauri may be the best example of an intermediate-mass black hole in our cosmic neighborhood.”

Team paper Published in the journal Nature.

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M. Heberle others2024. Stars moving at high speed around the intermediate-mass black hole at Omega Centauri. Nature 631, 285-288; Source: 10.1038/s41586-024-07511-z

Source: www.sci.news

Study shows wave activity causing erosion along the coastlines of Titan’s largest lakes and oceans

Titan, Saturn’s largest moon, is the only known planet other than Earth that still retains liquid water. Liquid hydrocarbons fed by rain from Titan’s thick atmosphere form rivers, lakes, and oceans, most of which are found in the polar regions. In a new study, a team of MIT geologists surveyed Titan’s coastline and found that the moon’s large lakes and oceans were likely formed by waves.

Artist’s rendering of the surface of Saturn’s largest moon, Titan. Image by Benjamin de Bivort, debivort.org / CC BY-SA 3.0.

The existence of waves on Titan has been a somewhat controversial topic ever since NASA’s Cassini spacecraft discovered liquid puddles on Titan’s surface.

“Some people who have looked for evidence of waves haven’t seen any waves at all and have said, ‘The ocean is as smooth as a mirror,'” said Dr. Rose Palermo, a geologist with the U.S. Geological Survey. “Others have said they saw some roughness in the water but didn’t know if it was caused by waves.”

“Knowing whether there is wave activity in Titan’s oceans can provide scientists with information about the moon’s climate, including the strength of the winds that generate such waves.”

“Wave information could also help scientists predict how the shape of Titan’s ocean will change over time.”

“Rather than looking for direct signs of wave-like features in Titan images, we wanted to take a different approach and see if just looking at the shape of the coastline could tell us what it is that is eroding the coast.”

Titan’s oceans are thought to have formed when rising waters flooded a landscape crisscrossed by river valleys.

The researchers zeroed in on three scenarios for what happened next: no coastal erosion, wave-driven erosion, and uniform erosion caused by either dissolution, where liquids passively dissolve coastal material, or a mechanism where the coast gradually peels away under its own weight.

They simulated how different coastline shapes would change under each of the three scenarios.

To simulate wave erosion, the researchers took into account a variable called “fetch,” which describes the physical distance from one point on the shoreline to the other side of a lake or ocean.

“Wave erosion depends on the height and angle of the waves,” Dr Palermo said.

“We used the fetch to estimate wave height because the bigger the fetch, the further away the wind will blow and the bigger the waves will be.”

Cassini observed Titan’s surface with microwaves and found several grooves that are deep canyons filled with liquid hydrocarbons, including Vid Fulmina, a branching network of thin lines in the upper left quadrant of the image. Image credit: NASA / JPL-Caltech / ASI.

To test how coastline shape would differ between the three scenarios, the scientists started with a simulated ocean area with a flooded river valley all around it.

For wave erosion, we calculated the fetch distance from every point along the coastline to every other point and converted that distance to wave height.

They then ran simulations to see how waves would erode the original shoreline over time.

They compared this to how the same coastline would change due to erosion caused by uniform erosion.

The authors repeated this comparative modelling for hundreds of different initial shoreline configurations.

They found that the shape of the termini varies greatly depending on the underlying mechanism.

Most notably, uniform erosion produced a bulging shoreline that was evenly distributed all around, even in flooded river valleys, whereas wave erosion smoothed out portions of the shoreline exposed primarily to long downstream distances, leaving the flooded valleys narrow and rough.

“Although the initial coastline was the same, we found that uniform erosion and wave erosion resulted in very different final shapes,” Dr Perron said.

“Although it looks like a flying spaghetti monster because of the flooded river valley, the endpoints created by the two types of erosion are very different.”

This image is a composite of images taken during two flybys of Titan in 2006. A large circular feature near the center of Titan’s disk may be the remnant of a very old impact basin. The mountain range southeast of the circular feature and the long, dark linear feature northwest of the old impact site may be the result of deformation of Titan’s crust caused by energy released when the impact occurred. Image credit: NASA/JPL/University of Arizona.

Dr. Perron and his colleagues verified their results by comparing their simulation results with actual lakes on Earth.

They found the same shape differences between Earth’s lakes known to have been eroded by waves and those affected by homogeneous erosion, such as dissolved limestone.

Their modelling revealed distinct and distinctive shapes depending on the mechanism by which the shoreline evolved.

So they wondered: Where does Titan’s coastline fit into these distinctive shapes?

In particular, they focused on four of Titan’s largest and best-mapped oceans: Kraken Mare, which is comparable in size to the Caspian Sea; Ligeia Mare, which is larger than Lake Superior; Punga Mare, which is longer than Lake Victoria; and Lake Ontario, which is about 20% the size of the land-based lake of the same name.

The researchers used Cassini’s radar images to map the coastlines of each of Titan’s oceans, and then applied their model to the coastlines of each ocean to see which erosion mechanisms best explain their shape.

They found that all four oceans fit closely to the wave-induced erosion model, meaning that waves created the closest coastlines to Titan’s four oceans.

“We found that when the shoreline is eroding, its shape is more consistent with wave-driven erosion than uniform erosion or no erosion,” Dr Perron said.

Scientists are trying to figure out how strong Titan’s winds would need to be to churn up waves strong enough to repeatedly scrape away the shoreline.

They also hope to learn from the shape of Titan’s coastline which direction the winds primarily blow from.

“Titan shows us that this case is completely pristine,” Dr. Palermo said.

“It may help us learn more fundamental things about how coasts erode without human influence, which in turn may help us better manage coastlines around the world in the future.”

of Investigation result Published in today’s journal Scientific advances.

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Rose V. Palermo others2024. Evidence of wave erosion on Titan’s coast. Scientific advances 10(25); Source: 10.1126/sciadv.adn4192

Source: www.sci.news

Europe’s largest rare earth metal deposit discovered in Norway

Rare Earths Norway, a mining company, has made a groundbreaking announcement of discovering Europe’s largest proven deposit. This discovery of rare earth elements is highly regarded and could potentially be a game-changer for the Nordic countries and the broader region.

This continental Europe’s largest rare earth deposit, not controlled by China, presents a significant opportunity for Europe amid its oil crisis. The demand for rare earths and critical minerals is expected to grow exponentially as the transition to clean energy accelerates.

Rare Earths Norway revealed in a statement on June 6 that the Fen carbonatite deposit in southeastern India has an estimated 8.8 million tonnes of total rare earth oxides (TREO) with economically mineable prospects. The company also estimates 1.5 million tonnes of magnet-related rare earth elements that can be used in electric vehicles and wind turbines.

This discovery surpasses a significant rare earth deposit discovered last year in Sweden. Rare Earths Norway CEO Alf Rystad emphasized the importance of this discovery, stating that there is currently no mining of rare earth elements in Europe.

Going forward, Rare Earths Norway aims to contribute to mining at least 10% of the EU’s annual demand for rare earth elements by 2030. The company also plans to develop the Telemark rare earth deposit southwest of Oslo to strengthen Norway’s position in the European rare earths value chain.

The International Energy Agency highlighted the shortage of current supplies needed to transform the energy sector due to the geographic concentration of many energy transition elements. China, the world’s largest rare earth ore processor, plays a significant role in supplying rare earth elements worldwide.

Rare Earths Norway intends to continue exploration work at the site with further drilling planned for the coming month. The company aims to begin production by 2030 to contribute to Europe’s rare earth supply and reduce dependence on Chinese sources.

In a recent interview, Alf Rystad remarked that while the discovered resources are valuable, they won’t increase in value compared to oil and gas. He mentioned European Commission President Ursula von der Leyen’s belief that lithium and rare earth elements will become more important than traditional fossil fuels in the future.

Source: www.nbcnews.com

Winter causes Mars’ largest volcano to freeze

View of the frost on Mount Olympus

ESA/DLR/Free University of Berlin

As winter mornings dawn on Mars, the summits of the planet’s largest volcanoes are covered in frost — another indication of the presence of water on the Red Planet.

We already know that Mars has large deposits of ice in the form of polar ice caps and possibly buried beneath the surface near the equator, but scientists have yet to observe surface water anywhere else on the planet.

Now, Admas Valantinus Valantinas, of Brown University in Rhode Island, and his colleagues found frost, which appears to form only in the mornings during the Martian winter, near the summits of volcanoes in the Tharsis region, including Olympus Mons, one of the solar system’s largest volcanoes. “This is really exciting, because it not only shows how dynamic the Martian water system is, but also that water could be found in varying amounts basically everywhere on Mars,” Valantinas says.

He and his team used a color camera on the European Space Agency’s Trace Gas Orbiter, which studies the Martian atmosphere, to take morning photographs of the icy volcano’s summit and found widespread blue frost. They calculated the surface temperature and found that it was too hot for carbon dioxide to freeze, and that similar-looking frozen carbon dioxide was not the cause.

Ice could form from gases erupting from volcanoes, but if so, do Valantinas and his team expect to see it year-round? Instead, the fact that it only appears during the colder parts of the year makes it more likely that the frost is the result of water vapor in the atmosphere freezing.

Knowing where ice forms on the Martian surface, especially from atmospheric processes, is crucial for accurate weather forecasting, he said. Susan Conway A researcher at the University of Nantes in France, she says we know that polar ice flows into the atmosphere, but we don’t know where it goes. “This is a really cool observation, because now we actually know where it goes.”

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Source: www.newscientist.com

The “doomsday glacier” is melting at an alarming rate, putting Earth’s largest city in danger of flooding

Considered one of West Antarctica’s most infamous glaciers, the “doomsday glacier” has earned its nickname due to the potentially significant rise in sea levels it could cause, ultimately reshaping coastlines. This glacier, known as Thwaites Glacier, is massive, the size of England and spanning 120km wide. It extends from the peak of the West Antarctic Ice Sheet to the Amundsen Sea, where it reaches out onto an ice shelf.


Unfortunately, Thwaites Glacier is experiencing troubling changes, with a notable increase in ice loss over recent years as a consequence of climate change. The rate of ice loss has doubled in the past 30 years due to rising ocean temperatures, which lead to the melting of the ocean floor beneath the glacier. Warm water is being transported towards Thwaites, particularly deep below the ocean surface, contributing to this rapid ice loss. The land beneath West Antarctic glaciers is below sea level, and the sloping ocean floor means warmer waters can intrude underneath, eroding the glaciers and making them less stable.

A recent study revealed that Thwaites Glacier may be more susceptible than previously believed, with seawater surging beneath it for kilometers. The melting of glaciers, including Thwaites, could result in a significant rise in sea levels, potentially impacting coastal areas worldwide. Additionally, the collapse of Thwaites could trigger nearby glaciers to follow suit, further elevating global sea levels by more than three meters. This irreversible loss on human timescales would mark a critical “tipping point.”

Scientists are concerned about the potential collapse of Thwaites Glacier, as it could have disastrous consequences for sea levels and climate. Researchers are exploring strategies to adapt to these expected changes and protect coastal regions at risk of submersion. The costs of preparing for rising sea levels are substantial, emphasizing the importance of proactive planning and adaptation. While sea level rise is inevitable, proactive measures can help mitigate its impact and protect vulnerable populations and ecosystems.

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Despite the impending challenges, scientists and experts emphasize the importance of courage and adaptation in the face of climate change. Dr. Caitlen Norton from the British Antarctic Survey stresses the need for resilience and preparedness to address the growing threat of rising sea levels. Adapting defenses, protecting coastal areas, and planning for future changes are crucial steps in mitigating the impact of climate change on coastal regions.

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Source: www.sciencefocus.com

Ancient snake painting holds record as world’s largest rock art

Animal sculptures carved into rocks along the Orinoco River in South America

Philip Riris et al.

The prehistoric rock carvings of giant snakes along the Orinoco River in South America are some of the largest known rock art in the world, some measuring over 40 metres in length.

The Orinoco is one of the world’s largest rivers, and it flows through Venezuela along the border with Colombia. “There is a fantastic record of rock art along the Orinoco, especially on the Venezuelan side,” he said. Jose Oliver at University College London. “Typically, they are paintings found under rocks.”

He said carvings are common at many open-air sites along the river, but not all of them have been officially recorded.

Oliver and his colleagues have made several visits to the coastal areas on both the Colombian and Venezuelan sides of the river since 2015, trying to get a better picture of the river’s rock carvings.

“It wasn’t hard to find new sites,” a team member said. Philip Lillis Professor at Bournemouth University in the UK. “Every time I turned a corner there was always something new.”

Of the 157 rock art sites the team visited, 13 consisted of carvings over four meters in height. “Anything that size is monumental to us,” Lillis says, “meaning they’re often visible from quite a distance, anywhere from 500 meters to a kilometer away.”

Most of the carvings depict humans, mammals, birds, centipedes, scrolls and geometric shapes, but snakes are one of the largest motifs, the largest measuring 132 feet (42 meters) wide. In indigenous Orinoco mythology, anacondas and boa constrictors are highly revered because they are primordial creator beings, Lillis said.

The prominence of rock art along the river suggests that the ancient carvings may have been territorial markers indicating that a particular group lived there, but not necessarily a warning not to trespass. “The carvings were not exclusionary, but rather may have been an inclusive practice shared between communities,” Lillis says.

Pottery excavated in the area, dated to 2,000 years ago, contains motifs similar to those in the carvings, suggesting that the rock art was created 2,000 years ago as well.

The team hopes to find more of these carvings and glean clues about their origin and purpose — for example, many of them are found close to rock shelters containing burial sites, suggesting a possible connection to ancient funerary practices.

“This is valuable research.” Andres Troncoso “This discovery sheds light on rock art in a little-known part of South America and furthers our knowledge of the region,” said researchers from the University of Chile.

“When Westerners think of rock art, they often think of mammoths, cave lions, and other large mammals that inhabit the Pleistocene cave sites of Western Europe,” he said. Patrick Roberts Commenting on the findings, a researcher from the Max Planck Institute for Geoanthropology in Germany said: “However, the giant snake carving studied in this paper is one of the largest single rock art in the world, and was found in the heart of a lowland tropical environment.”

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Source: www.newscientist.com

The genome of a new fern species from New Caledonia is the largest among all organisms

Tumecipteris oblancorata is a rare fern species known as the wolf lark, found in New Caledonia, a French overseas territory in the southwest Pacific Ocean. It has recently broken the world record with its genome size of 160.45 billion base pairs (Gbp), challenging current understanding and paving the way for further exploration of genome gigantism.



Tumecipteris oblancorata. Image courtesy of Pol Fernández.

Tomesypteris is a small and relatively understudied genus consisting of 15 species, mostly found in Oceania and some Pacific islands.

Scientists have previously estimated the genome sizes of two Tomesypteris species – Tumecipteris tannensis and Tomesypteris obliqua – with large genomes of 73.19 Gbp and 147.29 Gbp, respectively.

In 2023, Dr. Jaume Pellicer and his colleagues from the Royal Botanic Gardens, Kew, traveled to New Caledonia to analyze the genome size of Tumecipteris oblancorata.

The analysis revealed a record-breaking genome size of 160.45 Gbp for Tumecipteris oblancorata, also known as Tumecipteris truncata, surpassing the genome size of the Japanese flower plant species Paris Japonica (148.89 Gbp). For comparison, the human genome contains approximately 3.1 Gbp across 23 chromosomes.

Tomesypteris is a unique fern genus whose ancestors date back around 350 million years, characterized by primarily being epiphytes with a distribution limited to Oceania and a few Pacific islands.

Dr. Ilia Reich of the Royal Botanic Gardens, Kew, expressed surprise at the world record held by the inconspicuous Tumecipteris oblancorata, highlighting the diversity of plants at the DNA level and their importance in Earth’s biodiversity.

The team’s findings were published in the journal iScience.



Genome size diversity in eukaryotes: (A) Current distribution of genome sizes in the major lineages of plants, animals, and fungi. (B) Top 10 largest genome sizes recorded in eukaryotes. Image courtesy of Pol Fernández et al., doi: 10.1016/j.isci.2024.109889.

This remarkable discovery raises questions about the biological limits and complexities of plant genomes, inspiring further exploration into the mysteries of genome gigantism.

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Pol Fernandez othersThe 160 Gbp fork fern genome breaks eukaryotic size record. iSciencePublished online May 31, 2024, doi: 10.1016/j.isci.2024.109889

Source: www.sci.news

Tesla sees largest revenue decline since 2012, yet stock prices remain on the rise

After the earnings release, Tesla stock plummeted by 10% in after-hours trading on Tuesday. This was despite missing Q1 2024 sales, having sharply lower profits, and recalling the recently launched $100,000 Cybertruck, which had seen a recent rise.

The electric vehicle maker’s revenue stood at $21.3 billion, slightly below expectations of $21.48 billion and down by 9% from a year ago, marking the largest decline since 2012. Profits were reported at $1.1 billion, a 55% drop from the first quarter of 2023, the company announced.

Despite the disappointing figures, the report also included upbeat news for investors. This included a preview of a ride-hailing app set to be integrated into Tesla products. The company revealed plans to bring new vehicle models to the market sooner than anticipated, citing the development of its robotaxi network.

Over the past three months, Tesla has doubled its AI computing capacity (smart software complexity) and invested $1 billion in AI infrastructure during the same period.


Thomas Monteiro, senior analyst at the company, mentioned that Tuesday’s report and Tesla’s plans to accelerate the development of more affordable vehicles helped alleviate some concerns among investors. “This announcement suggests that Elon [Musk] may refocus on the EV giant, which is positive news for shareholders,” he stated.

The earnings report was Tesla’s second since the launch of the Cybertruck, its long-awaited electric pickup truck. It was also the first report after the vehicle’s recent recall. The company faced challenges with the futuristic steel car, including a voluntary recall due to reports of a loose accelerator pedal potentially causing vehicles to become stuck when driving at full speed. Despite this, the company did not directly address the recall in its earnings release.

Even without the Cybertruck issues, Tesla has a tough year ahead as it announced a 10% reduction in its global workforce, affecting approximately 14,000 jobs. The company also slashed prices globally over the weekend. The entry of Chinese electric car manufacturers into the market has added to Tesla’s struggles in recent quarters.

Tesla reported a decrease in car deliveries for the first time in four years in the last quarter. The company warned that the growth rate in car sales could be considerably lower compared to 2023.

Addressing concerns about his workload, Elon Musk stated during the earnings conference, “Tesla consumes the majority of my work time. I work every day. I will ensure that Tesla prospers.”

Source: www.theguardian.com

The largest raptor ever identified by its giant dinosaur footprints

Large bird of prey footprints discovered in China

Courtesy of Dr. Scott Parsons

Five giant dinosaur footprints discovered in southeastern China were made by the largest birds of prey ever recorded. The predator was probably 5 meters tall from nose to tail, about half the length of a school bus. It probably used its giant “killer claws”, one on each foot, to attack its prey.

Most raptors (technically known as deinonychosaurs) were small. Velociraptor For example, it was about the same size as a turkey. However, some of these dinosaurs were larger. Utahraptor and dakota raptor both reached approximately 5-6 meters in length.

scott parsons Now professors at the College of Charleston in South Carolina have added another giant raptor to the list. they named it fujianips is said to have lived in East Asia about 96 million years ago.

We still know little about fujianips. That’s because Parsons and his colleagues have yet to discover any parts of the skeleton. Instead, they found several footprints measuring 36 centimeters in length. “The preservation conditions were good for the footprints, but not so good for the bones,” he says. But they are confident that the footprints are from a bird of prey because each footprint has only two finger prints. This is consistent with the structure of a raptor’s foot, in that he has three toes, but one toe is off the ground to protect the large claw at the tip from abrasion.

People say fujianips. This study shows that raptors had the potential to grow even larger and compete with the largest carnivorous dinosaurs living here at the time, the allosaurids, some of which were over 10 meters long. He added that the Raptors may have had a key advantage over these rivals: “They were fast.”

But in the end, the raptor became slightly larger fujianips. Parsons says this may be because a third group of dinosaurs, the tyrannosaurids, was beginning to become dominant. “Many of the tyrannosaurids were fast, so it was much harder to compete with the tyrannosaurids,” he says.

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Source: www.newscientist.com

Intel reveals largest neuromorphic computer inspired by the brain at Hala Point

Hala Point neuromorphic computer is powered by Intel’s Loihi 2 chip

Intel Corporation

Intel has developed the world’s largest neuromorphic computer, a device that aims to mimic the behavior of the human brain. The company hopes to be able to run more advanced AI models than traditional computers can run, but experts say the device will not be able to compete with, let alone surpass, the cutting-edge. says there are engineering hurdles to overcome.

Expectations for neuromorphic computers are high because they are inherently different from traditional machines. While regular computers use a processor to perform operations and store data in separate memory, neuromorphic devices use artificial neurons for both storage and calculation, similar to our brains. To do. This eliminates the need to pass data between components, which can be a bottleneck in today’s computers.

This architecture has the potential to result in much greater energy efficiency, and Intel says its new Hala Point neuromorphic computer will solve an optimization problem that involves finding an optimal solution to a problem given certain constraints. It claims to use 100 times less energy than traditional machines when running. It also trains and runs AI models that use chains of neurons, similar to how a real brain processes information, rather than mechanically passing input through each layer of artificial neurons as in current models. New methods may also become possible.

Hala Point contains 1.15 billion artificial neurons across 1152 Loihi 2 chips, capable of 380 trillion synaptic operations per second. mike davis Despite this power, Intel says it takes up only six racks of space in a standard server case, which is about as much space as a microwave oven. Larger machines will also be possible, Davis said. “We built a system of this scale because, honestly, one billion neurons was a good number,” he says. “So there were no special technical engineering challenges that would cause us to stop at this level.”

No other existing machine can match Harapoint’s scale, but Deep South, a neuromorphic computer due for completion later this year, is said to be capable of 228 trillion synaptic operations per second.

The Loihi 2 chip is still a prototype that Intel has produced in small numbers, but Davis said the real bottleneck is the processing required to take a real-world problem, translate it into a format that can run on a neuromorphic computer, and run it. It is said to be in the software layer. process. This process, like neuromorphic computing in general, is still in its infancy. “Software is a big limiting factor,” he says. That means there’s still little point in building a large machine.

Intel has suggested that machines like Hala Point could create AI models that continuously learn, rather than having to be trained from scratch to learn new tasks like current models do. Masu.but james knight Researchers at the University of Sussex in the UK dismissed this as “hype”.

Knight points out that current models like ChatGPT are trained using graphics cards running in parallel, which means many chips can be used to train the same model. But since neuromorphic computers operate on a single input and cannot be trained in parallel, it could take decades to even initially train something like ChatGPT on such hardware. He says it’s expensive, let alone come up with a way to enable continuous learning once it’s up and running.

Although current neuromorphic hardware is not suitable for training large-scale AI models from scratch, Davis said that one day pre-trained models could be used to learn new tasks over time. He said he hopes it will be possible. “Although this method is still in the research phase, this is a kind of continuous learning problem that large-scale neuromorphic systems like Hala Point can solve in a very efficient way in the future. “It’s considered,” he says.

Knight said neuromorphic computers could solve many other computer science problems as the tools needed for developers to write software for these problems to run on their own hardware become more mature. We are optimistic that we can improve this and increase efficiency at the same time.

It may also offer a better path toward human-level intelligence, also known as artificial general intelligence (AGI), although many AI experts believe that large-scale language models that power things like ChatGPT I think it’s impossible. “I think it’s becoming less and less of a controversial opinion,” Knight says. “The dream is that one day neuromorphic computing will allow us to create brain-like models.”

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Source: www.newscientist.com

Could the massive fish lizard be the largest marine reptile ever found, surpassing the megalodon in size?

Forget about megalodons being scary, there’s a new prehistoric creature in town with jaws that may rival Meg’s in power, making it the largest marine reptile ever identified on Earth.

The giant jawbone of this beast measures over 2 meters (6.6 feet), allowing for a bite force strong enough to crush bones. In comparison, the jawbone of a megalodon, which was about the same size, measured only 0.5 meters (1.6 feet).

Experts believe that this massive new ichthyosaur species was a staggering 25 meters (82 feet) long, similar in size to a modern blue whale. (Megalodon was about 15-20 meters, or 65 feet in length).

The fossilized remains of this creature were found on the Somerset coast.

The research team named this new species Ichthyotitan severnensis, meaning “Giant Fish Lizard of the Severn.” These bones date back to around 202 million years ago, towards the end of the Triassic period, just before the dinosaur extinction event.


The first jawbone of this mysterious species was discovered in 2016, with this recent find confirming its existence.

Dr. Dean Lomax, a paleontologist at the University of Manchester, expressed excitement about the discovery, hoping that more complete specimens may be found in the future.

Lomax and his team compared the two jawbones and found shared unique features, indicating they were from the same geological period.

Ruby Reynolds, an 11-year-old girl, discovered a new salangular on the beach in 2020, leading to further discoveries by her and her team, including the final piece of the jawbone in 2022.

Now 15, Ruby Reynolds has contributed to naming the new species and is already a published scientist, listed as a contributor to research in the journal PLoS ONE.

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Source: www.sciencefocus.com

Avian Influenza Detected in Chickens at Texas Factory, America’s Largest Raw Egg Producer Reports

The largest producer of raw eggs in the nation has announced a temporary halt in production at its Texas factory on Tuesday due to avian influenza. The virus has been found in chickens, and authorities have reported cases at a poultry facility in Michigan as well.

Calmaine Foods, headquartered in Ridgeland, Mississippi, has euthanized about 1.6 million hens and 337,000 hens, or roughly 3.6% of its flock, after avian influenza cases were discovered at its Palmer facility in Texas. The company stated that it has been sanctioned in Texas County.

The plant is situated on the Texas-New Mexico border in the Texas Panhandle, about 85 miles (137 kilometers) southwest of Amarillo and 370 miles (595 kilometers) northwest of Dallas. CalMaine reported that most of its eggs are sold in the Southwest, Southeast, Midwest, and Mid-Atlantic regions of the United States.

The statement from the company mentioned, “We are collaborating closely with federal, state, and local authorities, as well as key industry organizations, to minimize the risk of further outbreaks and manage the response effectively.”

“Calmaine Foods is taking steps to ensure production from other facilities to mitigate any disruptions for customers,” the statement added.

The company clarified that there is no identified risk of avian influenza associated with eggs currently in the market, and no recalls have been issued for eggs.

According to the U.S. Department of Agriculture, properly processed and cooked eggs are safe for consumption. The department confirmed.

A day after the announcement by Cal-Maine, state health officials revealed that one person had been diagnosed with bird flu after potential exposure to an infected cow, but the risk to the public remains low. Federal health officials stated that the human case in Texas is the first documented instance globally of someone contracting this strain of bird flu from a mammal.

In Michigan, avian influenza was detected at a commercial poultry facility in Ionia County by the Michigan State University Veterinary Diagnostic Laboratory, as reported by the Michigan Department of Agriculture and Rural Development.

Ionia County is approximately 100 miles (161 kilometers) northwest of Detroit.

The department confirmed the disease on Monday following laboratory tests, marking the fourth instance since 2022 that the illness was identified at a commercial site in Michigan.

Department spokesperson Jennifer Holton stated on Tuesday that state regulations prohibit the disclosure of poultry types at the facilities. The facility is under quarantine, but no disruptions to the state’s supply chain are anticipated, according to Holton.

Dairy cows in Texas and Kansas reported Federal agriculture officials subsequently confirmed the infection in a Michigan dairy herd that had recently acquired cattle from Texas. An Idaho dairy herd was also added to the list after federal agriculture officials confirmed the presence of avian influenza, according to a USDA press release on Tuesday.

Source: www.nbcnews.com