Illustration of a protection bubble around the sun (yellow dot) and the earth (blue dot)
Harvard Radcliffe Institute
Two to three million years ago, the solar system encountered galactic-scale turbulence and collided with dense interstellar clouds, potentially altering both the Earth's climate and evolution.
Only recently have researchers been able to map the Sun's orbit through the Galaxy, particularly in relation to the relatively dense hydrogen clouds that pass through the interstellar medium, the vast expanse of space between star systems.
the current, Merab Offer A research team from Boston University in Massachusetts has found evidence that one of these clouds, a “local cold cloud ribbon” in Lynx, likely intersects with the Sun's heliosphere.
The heliosphere is a protective cocoon or bubble formed by the solar wind pushing out to the edge of the solar system. Within the heliosphere, the planet is protected from the worst gamma radiation in the galaxy.
The new study proposes that as the solar system passed through the interstellar cloud, the heliosphere retreated from it and moved inward toward the Sun. The researchers think that the heliosphere may have shrunk so much that Earth was outside the protective cocoon provided by the solar wind, perhaps for around 10,000 years.
Merab and his colleagues used the European Space Agency's Gaia satellite to map the location of the dense, cold clouds and the sun's past orbit.
Ofer says the heliosphere's encounter with the cold cloud coincides with deposits of the elements plutonium-244 and radioactive iron-60 in Antarctic ice, deep-sea cores and lunar samples. These elements, which originated from distant supernovae, would have been captured in interstellar clouds and deposited while Earth was outside the heliosphere.
“There are signs of an increase in these elements over the past two years. [million] “The solar cloud record going back 3 million years provides compelling evidence that the Sun did in fact pass through it around 2 million years ago,” Offer says. “The exposure of Earth to a cloud of cold interstellar material and the associated increase in atmospheric hydrogen and radiation almost certainly had a major impact on Earth and its climate.”
Sarah Spitzer The University of Michigan researcher says the paper provides “compelling” evidence that the heliosphere was exposed to a much denser interstellar cloud two to three million years ago. As the solar system passed through that dense, cold cloud, Earth would have been outside the heliosphere and directly exposed to the interstellar environment, she says.
“Understanding this can teach us about the impact interstellar material has had on life on Earth in the past,” Spitzer says, “but it also helps us better understand the impact the heliosphere has on life on Earth today, what would happen if Earth were exposed to interstellar material again in the future, and when that might happen.”
Evan Economo Researchers from Japan's Okinawa Institute of Science and Technology say it's intriguing to consider how encounters in “our nearby space” could have influenced the environment experienced by life on Earth.
“The heliosphere is part of the extended environment experienced by life on the Earth's surface, influencing climate and radiation from space,” he says. “If we had been outside the heliosphere for a period of time, it could have altered the evolutionary trajectory of a wide range of life, including humans. Such connections are highly speculative at this point, but they provide us with new research directions.”
Two NASA astronauts aboard Boeing's Starliner spacecraft successfully docked at the International Space Station on Thursday, despite issues with the spacecraft's thrusters.
NASA confirmed that astronauts Butch Wilmore and Sunita Williams docked with the space station at 1:34 p.m. ET.
“It's good to be connected to the great city of the sky,” Wilmore told mission controllers on the ground.
The docking attempt, originally scheduled for 12:15 p.m. ET, was postponed due to problems with five thrusters on the Starliner.
Boeing's Starliner spacecraft docked with the International Space Station at 1:34 p.m. ET on June 6. National Aeronautics and Space Administration (NASA)
The hatch between the Starliner capsule and the space station was opened about two hours after docking.
Astronaut Williams was the first to enter the space station, greeted by the ISS crew members already on board.
Wilmore and Williams expressed their gratitude to the teams that worked to get them to the ISS and said they were ready to begin work in orbit.
Their arrival brings the International Space Station to full capacity.
Wilmore and Williams are expected to spend about a week on the ISS before potentially returning to Earth on June 14.
Flight controllers will continue to monitor the capsule's reaction control thrusters for further adjustments.
The Starliner capsule is capable of autonomous docking with the space station.
The Boeing Starliner spacecraft prepares to dock with the International Space Station. National Aeronautics and Space Administration (NASA)
Boeing's Starliner spacecraft is more than 24 hours away from its first crewed test flight to the space station.
The test flight aims to demonstrate the capsule's ability to safely transport NASA astronauts to the International Space Station.
Starliner launched on June 5th from Cape Canaveral, Florida.
Joe Raedl/Getty Images
Boeing has successfully launched its Starliner spacecraft with a crew for the first time on its third attempt, a landmark launch that gives NASA two commercial options for sending astronauts into space: Boeing and SpaceX.
Starliner was launched on an Atlas V rocket from Cape Canaveral, Florida. June 5th, 10:52 AM (local time) After several years of delays, the manned launch has finally come to fruition. Initially, the manned launch was expected to take place by the end of 2017, but the plans fell behind schedule. The mission was finally scheduled to launch in May, but a valve failure forced NASA to abort the mission. The second launch on June 1 was scheduled for Discarded Due to computer problems.
But the third launch just a few days later was successful, with the capsule reaching orbit as planned. Carrying NASA astronauts Butch Wilmore and Suni Williams, they made the 24-hour journey to the International Space Station, where they will stay for about a week to test various systems before returning to Earth aboard the same spacecraft.
The capsule was named Calypso. Reportedly Named after Jacques Cousteau's oceanographic ship, the mission's goal is to verify that Starliner is safe to transport crew to the ISS. If these tests are successful and the two astronauts return safely to Earth aboard Starliner, similar ships could begin annual crewed flights to the space station.
Each Starliner is designed to last up to 10 round trips, carrying up to seven people per flight, though a standard operational flight will likely only carry three or four astronauts.
National Aeronautics and Space Administration (NASA) Two contracts won Ten years ago, there were bids for a shuttle ship to transport crew to the International Space Station. One bid was for Boeing's Starliner, the other was SpaceX's Dragon capsule. Dragon outdid Starliner with its first crewed flight in 2020.
Starliner will be the sixth manned orbital spacecraft launched by the United States, following Mercury, Gemini, Apollo, Space Shuttle and Dragon.
The space telescope entered hibernation over a week ago due to the failure of one of its three remaining gyroscopes, which are part of its pointing system. This same gyro had been malfunctioning for months, affecting its scientific capabilities.
NASA confirmed on Tuesday that efforts to repair the gyro had been unsuccessful, leaving the spacecraft operating with just one gyroscope, limiting its scientific functions.
As a result, Hubble will be inactive until mid-June. The telescope will have reduced agility and slower target acquisition. Despite these limitations, officials believe that Hubble will still be able to make significant discoveries in the coming decade.
“We are optimistic about Hubble’s future,” said Patrick Close, NASA’s project manager.
Mark Crump, NASA’s astrophysics director, stated that there are currently no plans to launch a mission to extend Hubble’s life by raising it to a higher orbit.
A billionaire who has booked SpaceX flights for himself has offered to sponsor and perform the necessary repairs. However, Crumpen expressed concerns about the risks involved and the need for further analysis.
The Hubble Telescope was launched into orbit in 1990, initially facing challenges due to a misaligned mirror. After a successful repair mission, Hubble resumed its observations of the cosmos in remarkable detail.
During a visit in 2009, astronauts installed six new gyroscopes on Hubble. Unfortunately, three of them have stopped functioning. These gyroscopes are crucial for maintaining the telescope’s stability and orientation.
Currently, only two gyroscopes are operational, one for pointing and the other as a backup.
The Webb Space Telescope, a more advanced successor to Hubble, is set to launch in 2021.
Rivals Boeing and SpaceX are preparing for a busy week with upcoming key test flights of their rockets and spacecraft.
Boeing is set to launch two NASA astronauts to the International Space Station aboard its Starliner spacecraft for the third time on Wednesday. The liftoff is scheduled for 10:52 a.m. ET from Cape Canaveral Space Command Station in Florida.
The following day, SpaceX will conduct the fourth uncrewed test flight of its Starship megarocket. The launch will take place from SpaceX’s Starbase test site in Boca Chica, Texas, with a targeted liftoff time of 8 a.m. ET.
Despite being spaceflight competitors, this week’s launch serves a unique purpose: Boeing’s Starliner spacecraft, developed in collaboration with NASA, will transport astronauts to the space station – a service SpaceX has been providing commercially for NASA since 2020.
Boeing’s third attempt to launch astronauts into space
Should Boeing’s initial crewed test flight succeed, it could pave the way for regular flights of its Starliner spacecraft to the space station for NASA, challenging SpaceX’s current dominance.
The Starliner will carry NASA astronauts Barry “Batch” Wilmore and Sunita Williams, who will spend approximately a week aboard the space station before returning to Earth and landing at White Sands Missile Range in New Mexico.
Butch Wilmore (left) and Suni Williams put on their Boeing space suits at the Kennedy Space Center on Saturday. Miguel J. Rodriguez Carrillo/AFP – Getty Images
Starliner’s most recent launch attempt was halted on Saturday with less than four minutes to go due to an automatic abort triggered by a computer controlling the Atlas V rocket, created by United Launch Alliance, a collaboration between Boeing and Lockheed Martin.
SpaceX’s Starship test flight on Thursday aims to demonstrate technologies critical for future moon missions.
Starship, the most powerful rocket ever developed and designed to be fully reusable, is expected to play a vital role in NASA’s plans to send astronauts back to the Moon. Additionally, SpaceX intends to use Starship for eventual missions to Mars.
NASA is also working on its own Space Launch System megarocket and Orion spacecraft for moon missions, part of the Artemis program which envisions establishing a base camp on the moon’s surface before exploring Mars.
The NASA/ESA Hubble Space Telescope captured this stunning image of a barred spiral galaxy called NGC 4731.
This Hubble Space Telescope image shows NGC 4731, a barred spiral galaxy about 43 million light-years away in the constellation Virgo. Image courtesy of NASA / ESA / Hubble / D. Thilker.
NGC 4731 It is located in the constellation Virgo, about 43 million light years from Earth.
Also known as IRAS 12484-0607, LEDA 43507, and UGCA 302, it is classified as a barred spiral galaxy.
“Barred spiral galaxies outnumber regular spiral and elliptical galaxies combined, making up about 60 percent of all galaxies,” the Hubble astronomers said.
“The bar-like structure we see is the result of the orbits of stars and gas in our galaxy aligning, forming dense regions where individual stars move in and out over time.”
“This is the same process that maintains the spiral arms of our galaxy, but in the case of barred galaxies it's a bit more mysterious. As spiral galaxies mature they seem to form a bar at their centre, which explains the large number of bar structures we see today. But later on the bar can also be lost if the accumulated mass along it becomes unstable.”
“The orbital patterns and gravitational interactions of galaxies support the bar-like structure of the galaxy, transporting matter and energy and promoting star formation.”
“Indeed, the observing program studying NGC 4731 seeks to investigate this flow of matter within the galaxy,” they added.
beginning discovered Discovered on April 25, 1784 by German-born British astronomer William Herschel, NGC 4731 has a diameter of about 80,000 light years.
With LEDA 43526 Galaxy, Forms Holm 472, a pair of interacting galaxies.
NGC 4731 is also a member of the NGC 4697 galaxy group. Located Near the Virgo Supercluster.
“Beyond the bar, NGC 4731's spiral arms extend far beyond the scope of this close-up Hubble image,” the astronomers said.
“The galaxy's elongated arms are thought to be the result of gravitational interactions with other nearby galaxies in the Virgo Cluster.”
The color image of NGC 4731 includes ultraviolet, near-infrared, and optical observations. Hubble's Wide Field Camera 3 (WFC3).
Six filters were used to sample different wavelengths, and color was generated by assigning a different hue to each monochromatic image associated with an individual filter.
“The richness of color reveals the galaxy's swirling gas clouds, dark dust bands, bright pink star-forming regions, and most notably, its long, luminous arms stretching out behind it,” the researchers said.
About 550 light-years away in the constellation Taurus, three dazzling stars, HP Tau, shine brightly from the cavity of a reflection nebula in a new Hubble image. Image credit: NASA / ESA / G. Duchene, University of Grenoble I / Gladys Kober, NASA and Catholic University of America.
HP Tau is a triple star system located approximately 550 light-years away in the constellation Taurus.
The system, also known as EPIC 247592463, TIC 118521708, or IRAS 04328+2248, consists of the variable stars HP Tau, HP Tau G2, and HP Tau G3.
HP Tau is one of the stars. T Taurus a type of young variable star that has not yet begun nuclear fusion but is beginning to evolve into a hydrogen-fueled star similar to the Sun.
“T Tauri stars tend to be less than 10 million years old, compared to our Sun, which is about 4.6 billion years old, but they formed when they were shrouded in clouds of dust and gas. “They are often discovered as they are,” Hubble astronomers said.
“Like other variable stars, HP Tau's brightness changes over time.”
“The T Tauri star is known to have periodic and random fluctuations in brightness.”
“Random fluctuations can be caused by chaotic conditions in a developing young star, such as instability in the accretion disk of dust and gas around the star, material from that disk falling into the star and being consumed, and flares on the star's surface. It may be due to the nature of
“The periodic changes may be due to giant sunspots rotating in and out of view.”
“Clouds of gas and dust glow with reflected light as they orbit the star.”
“Reflection nebulae do not themselves emit visible light, but they shine when light from nearby stars reflects off gas and dust, much like fog illuminated by a car's headlights.”
Hubble studied the HP-tau system as part of its study of protoplanetary disks, disks of material around stars that coalesce into planets over millions of years.
NGC 4753 is characterized by a bright white core and distinct dust lanes around the core.
This Hubble image shows part of the lenticular galaxy NGC 4753, about 60 million light-years away in the constellation Virgo. Image credit: NASA / ESA / Hubble / L. Kelsey.
NGC4753 It is located approximately 60 million light years away in the constellation Virgo.
Also known as LEDA 43671, UGC 8009, or IRAS 12498-0055, this lenticular galaxy was discovered by German-born British astronomer William Herschel on February 22, 1784.
NGC 4753 is a member of galaxy group NGC 4753 in the Virgo II cloud, a collection of at least 100 galaxy clusters and individual galaxies extending from the southern edge of the Virgo Supercluster.
“NGC 4753 is thought to be the result of a galaxy merger with a nearby dwarf galaxy about 1.3 billion years ago,” Hubble astronomers said in a statement.
“The unique dust lanes around the galactic cores are thought to be formed by this merging event.”
“Most of the galaxy's mass is now thought to reside within a slightly flattened spherical halo of dark matter.”
“Dark matter is a type of matter that cannot currently be directly observed, but it is thought to make up about 85% of all matter in the universe,” the researchers said.
“It is called 'dark' because it does not appear to interact with electromagnetic fields and therefore does not appear to emit, reflect, or refract light.”
“This object is also of scientific interest for testing various theories about the formation of lenticular galaxies, given its low-density environment and complex structure.”
“Additionally, this galaxy has experienced two known Type Ia supernovae.”
“These types of supernovae are very important because they are caused by the explosion of a white dwarf star with a companion star and always peak at the same brightness, or 5 billion times brighter than the Sun.”
“Knowing the true brightness of these events and comparing it to their apparent brightness gives astronomers a unique opportunity to measure distances in the universe.”
This new image of NGC 4753 consists of observations from Hubble's Wide Field Camera 3 (WFC3) found in the ultraviolet and optical parts of the spectrum.
Two filters were used to sample different wavelengths. Color is obtained by assigning different hues to each monochromatic image associated with an individual filter.
The Hubble team has released a beautiful new image of the dwarf galaxy IC 776 in the constellation Virgo.
This Hubble image shows IC 776, a dwarf galaxy about 100 million light-years away in the constellation Virgo. Image credit: NASA / ESA / Hubble / M. Sun.
IC776 It is located in the constellation Virgo, about 100 million light years away from Earth.
This galaxy, also known as ALFALFA 3-210, LEDA 39613, and UGC 7352, discovered It was announced by French astronomer Stéphane Javert on May 4, 1893.
IC 776 is Virgo Clusterthe nearest and best-studied large galaxy cluster.
It is a dwarf galaxy and is also classified as a dwarf galaxy. SAB type One study calls this the “complex case” in morphology.
“This extremely detailed observation from Hubble illustrates its complexity,” Hubble astronomers said in a statement.
“IC 776 has a ragged and disorganized disk, but it still appears to spiral around a central core, creating an arc of star-forming regions.”
The color image of IC 776 was created from separate exposures taken in the visible and near-infrared regions of the spectrum. Hubble's advanced survey camera (ACS).
Two filters were used to sample different wavelengths. Color is obtained by assigning different hues to each monochromatic image associated with an individual filter.
“This image comes from an observational program dedicated to the study of dwarf galaxies in the Virgo cluster and searching for X-ray sources in such galaxies,” the researchers said.
“X-rays are often emitted from accretion disks, where matter pulled into a compact object by gravity collides, forming a hot, glowing disk.”
“This compact object could be a white dwarf or neutron star that steals material from its companion star, or it could be a supermassive black hole at the center of a galaxy that consumes its surroundings.”
“Dwarf galaxies like IC 776 passing through the Virgo cluster can experience pressure from intergalactic gas, stimulate star formation, and feed the black hole at the galaxy's center,” the study says. they added.
“It could produce a high-energy accretion disk that is hot enough to emit X-rays.”
“Hubble cannot see X-rays, but in conjunction with X-ray telescopes such as NASA's Chandra, it can use visible light to reveal the source of this radiation in high resolution.”
“Dwarf galaxies are thought to be of great importance for understanding cosmology and galaxy evolution.”
“As with many fields of astronomy, the ability to examine these galaxies across the electromagnetic spectrum is critical to research.”
This Hubble image shows a star-forming region containing giant young blue stars in the Tarantula Nebula. Image credits: NASA/ESA/STScI/Francesco Paresce, INAF-IASF Bologna/Robert O'Connell, UVA/SOC-WFC3/ESO.
“We believe the ULLYSES project is revolutionary and will have an impact across astrophysics, from exoplanets to the influence of massive stars on the evolution of galaxies, to understanding the early stages of the evolving universe. ” said Dr. Julia Roman-Duval, leader of the ULLYSES implementation team. She is an astronomer at the Space Telescope Science Institute.
“Apart from the specific purpose of research, stellar data can also be used in the field of astrophysics in ways we cannot yet imagine.”
Dr. Romain Duval and her colleagues studied 220 stars and combined their observations with information on 275 stars from the Hubble archive.
The study also includes data from some of the world's largest and most powerful ground-based telescopes and X-ray space telescopes.
The ULLYSES dataset consists of stellar spectra and includes information about each star's temperature, chemical composition, and rotation.
One of the star types being studied under ULLYSES is an ultra-hot, massive blue star.
They are a million times brighter than the Sun and glow intensely in ultraviolet light that can be easily detected by Hubble. Their spectra contain important information for diagnosing the speed of powerful winds.
The wind drives the evolution of galaxies, producing galactic seeds with the elements necessary for life. These elements are cooked in the star's fusion reactor and injected into space as the star dies.
ULLYSES targeted blue stars in nearby galaxies that are deficient in elements heavier than helium and hydrogen.
“Observations of Ulises are a stepping stone to understanding the first stars and their winds in the universe and how they influence the evolution of young host galaxies,” said Dr. Romain Duval.
Another category of stars in the ULLYSES survey are young stars with less mass than the Sun.
Although it is cooler and redder than the Sun, during its formative years it emits large amounts of high-energy radiation, including bursts of ultraviolet and X-rays.
As they are still growing, they are collecting material from the surrounding planet-forming disks of dust and gas.
Hubble's spectra contain important diagnostic information about the mass-gaining process, including the amount of energy this process releases into the surrounding planet-forming disk and nearby environment.
Intense ultraviolet radiation from young stars influences the evolution of these disks as they form planets and the potential habitability of newborn planets.
The target star is located in a star-forming region near the Milky Way.
The ULLYSES concept was designed by a panel of experts with the aim of using Hubble to provide a conventional set of stellar observations.
“ULLYSES was originally conceived as an observation program using Hubble's high-sensitivity spectrometer,” said Dr. Roman Duval.
“However, this research was greatly enhanced by community-driven complementary observations in collaboration with other ground-based and space-based observatories.”
“By covering such a wide area, astronomers can study the lives of stars in unprecedented detail and develop a more comprehensive picture of the properties of these stars and how they affect their environments. It becomes possible to draw.”
A new image from the NASA/ESA Hubble Space Telescope shows a jet emerging from the cocoon of the multistar system FS Tau.
This Hubble image shows the multistar system FS Tau about 450 light-years away in the constellation Taurus. Image credit: NASA / ESA / K. Stapelfeldt, NASA Jet Propulsion Laboratory / Gladys Kober, NASA / Catholic University.
FS Tau It is located about 450 light years away in the constellation Taurus.
The system is part of the Taurus-Auriga region, a collection of dark molecular clouds that is home to many newly formed young stars.
FS Tau, also known as HH 157 or TIC 58437437, is only about 2.8 million years old, making it an extremely young star system.
FS Tau is a multi-star system consisting of FS Tau A, a bright star-like object near the center of the image, and FS Tau B, a bright object on the far right hidden by a dark vertical dust lane. ''' said the Hubble astronomer.
“The young object is surrounded by gently illuminated gas and dust in this stellar nursery.”
“FS Tau B is a protostar surrounded by a protoplanetary disk. A protoplanetary disk is a pancake-like collection of dust and gas left over from star formation that eventually coalesces to form a planet. It will be.”
“A thick lane of dust seen almost head-on separates what is believed to be the illuminated surface of the flared disk.”
“FS Tau B is probably T TauriAlthough nuclear fusion has not yet begun, it is a type of young variable star that is beginning to evolve into a hydrogen-fueled star similar to the Sun. ”
“Protostars glow because of the thermal energy released when the gas clouds from which they formed collapse, and from the accretion of material from nearby gas and dust.”
“Variable stars are a type of star whose brightness changes significantly over time.”
“FS Tau A itself is a Tauri T binary system, consisting of two stars orbiting each other,” the researchers added.
“Protostars are known to emit fast-moving columns of energetic material called jets, and FS Tau B provides a striking example of this phenomenon.”
“Protostars are the source of the unusual, asymmetric, double-sided jets that appear blue here.”
“Their asymmetric structure may be due to differences in the rate at which mass is ejected from the object.”
“Herbig halo objects form when jets of ionized gas emitted by young stars collide at high speed with nearby clouds of gas and dust, forming bright nebular patches.”
New research has implications for crew safety in space and could give clues about how aging affects the balance systems of people on Earth.
horges other. We addressed the question of whether body posture influences humans' perception of self-motion and distance. They found that the same amount of optical flow can elicit the sensation of traveling farther when lying on one's back and when sitting upright; that is, optical flow We found evidence that it is more effective in eliciting the sensation of movement. This constitutes evidence that visual and nonvisual cues are at least partially integrated, even when self-movement is presented only visually. However, we found no significant differences in performance in microgravity on Earth and on the ISS, suggesting that vestibular stimulation is not important, if any, in estimating visually presented self-motion.
The study's lead author, Professor Lawrence Harris from the University of York, said: “The perception of gravity has been repeatedly shown to influence perceptual abilities.”
“The most profound way to study the effects of gravity is to remove it. That's why we brought our research into space.”
“We have had a steady presence in space for nearly a quarter of a century, but our efforts in space are ever-increasing as we plan to return to the moon and beyond, ensuring health and safety. It is becoming increasingly important to answer questions about
“Based on our findings, it appears that humans are surprisingly able to use vision to adequately compensate for the lack of Earth's normal environment.
For the study, Professor Harris and his colleagues surveyed more than a dozen astronauts aboard the International Space Station (ISS), which orbits about 400 kilometers above the Earth's surface.
“Here, Earth's gravity is almost canceled out by the centrifugal force generated by the station's orbit. In the resulting microgravity, the movement of people becomes close to flight,” Professor Harris said.
“People had previously reported anecdotally that they felt like they were traveling faster or farther than they were actually in space, so this actually motivated us to record this.”
The authors compared the performance of 12 astronauts (six men and six women) before, during, and after a year-long mission to the space station and found out how far they traveled. I discovered that my sense of what I had done was almost intact.
Space missions were hectic endeavors, and it took several days for researchers to make contact with the astronauts after arriving at the space station.
“Our study may not have captured early adaptations that may have occurred during the first few days. Because whatever adaptations occur, they occur very quickly. This remains a good news message,” Professor Harris said.
Space missions are not without risks. Because the ISS orbits around the Earth, small objects can occasionally collide with it and enter the ship, where astronauts must move to safety.
“During the experiment, the ISS had to take many evasive maneuvers,” Professor Harris said.
“Astronauts need to be able to get to safety or escape through a hatch on the ISS in an emergency. So to see that they were actually able to do this with great precision was very exciting. I felt relieved.”
“Our research shows that exposure to microgravity mimics the aging process primarily at a physiological level, including bone and muscle wasting, changes in hormonal function, and increased susceptibility to infections. However, this paper found that self-movement was largely unaffected, suggesting a balance problem.''The problem, which often comes from old age, may have nothing to do with the vestibular system. ”
“This suggests that the mechanisms of movement perception in older people should be relatively unaffected, and that the problems associated with falls are probably more to do with this than in terms of perception of distance traveled. How can they translate that into a balance reflex? ”
B. Horges other. 2024. Effects of long-term exposure to microgravity and body orientation relative to gravity on perceived distance traveled. NPJ microgravity 10, 28; doi: 10.1038/s41526-024-00376-6
In my family, we have developed a habit of ordering affordable DVDs whenever we discover a show or movie that we know we want to watch again (which is a trick in itself!).
Towards the end of 2020, when I relocated to a new apartment in another area of Seattle, I ended up disposing of a trash bag full of VHS tapes. While it was inevitable due to spatial constraints, I had a strong feeling that I might regret it. A sudden shift in the TV landscape where channels started charging viewers for access to old content (from Jaws to Airplanes to classic dramas) literally overnight caught us off guard. We hadn’t anticipated such a rapid change. mountain aspect
‘In the end, it will become a future landfill site.‘
I enjoy the concept of having a DVD collection and perusing its shelves like a rental store.
However, I can’t shake off the realization that most of the valuable possessions we accumulate will eventually end up in future landfills, left for future generations to grapple with. I am also keenly aware that at some point, I will either have to take on the responsibility of disposing of and redistributing my various interests, or pass the task on to a close relative. In that sense, the thought of owning even a modest DVD collection extensive enough to cover all bases fills me with dread. I think of my grandparents and the boxes they amassed over their lifetimes, destined for disposal in the dump, their parents’ attic, or the charity shop. TypeON negative
‘There’s a significant disparity in quality…‘
I may be considered a Luddite, but I’m not particularly captivated by this trend of streaming.
I recently watched a movie on Disney+. Newer movies often exhibit overly dark visuals (a complaint echoed by several acquaintances). Older films are frequently displayed in incorrect proportions or feature subpar soundtracks. My son has recently subscribed to Prime Video mainly for the TV shows but has yet to explore the movie offerings. For some reason, I harbor doubts about being able to find the movie I wish to watch.
Fortunately, we still have a local HMV store. Nothing beats the experience of strolling there, browsing around for an hour or so, and selecting a Blu-ray. The disparity in quality between watching movies via streaming and physical media is quite pronounced. “After Hours”, “Eraserhead”, “Boogie Nights”, “Naked”, “The Conversation”, “The Passengers”… While casual movie enthusiasts may indulge in a Netflix binge, more dedicated film fans prefer a shelf stocked with physical media. man without fear
A bustling video store in 2009. Photo: Bloomberg/Getty Images
‘This current phase is the worst‘
Rental spaces will once again thrive, though it may take time, bringing a sense of nostalgia for some and a fresh experience for others. As mentioned in the article, there is a resurgence fueled by the revival of vinyl records. The more enthusiasts of the original content and the younger generation realize that they can’t access the authentic material, the more the market will adapt. However, this phase is undoubtedly the most challenging, especially with streaming services pulling titles in multiple directions. Mr username 2014
‘the hype is real‘
I recently canceled my streaming subscription and started collecting “final format” 4K Blu-rays.
The hype is justified. The quality is exceptional, with no discernible drop in visual and audio quality that can happen with streaming. Some discs are particularly well-optimized for the format. Oppenheimer is a prime example (using high-quality headphones and viewing on a 4K disc makes for a very satisfying 3-hour experience). The advent of Villeneuve is also commendable.
As a gamer, I rarely have time to dedicate to playing for more than 20 hours nowadays, so having a PS5 gives me something to engage with. blue jay 2011
‘Household finances are stretched‘
Speaking personally, I believe the streaming industry will eventually rue its efforts to lock in customers. Unfortunately, household budgets are tight, and the cost of subscribing to streaming services adds up. And it’s not just me – there are numerous services vying for attention, leading to decision fatigue.
When movies and similar content are sold on DVD or Blu-ray, the consumer is committing to a one-time purchase. As a result, these companies, and the film industry as a whole, may end up forfeiting a significant portion of their downstream revenue while also being under pressure to ensure customer satisfaction. As this discussion underscores, many of us still yearn for the ability to purchase movies in physical formats. buzz 2023
‘I have reverted‘
Honestly, I shifted to streaming platforms for movies and music for a while, but I found myself reverting back. Not only did the platform remove content I desired (movies and shows), but (especially when it came to music) changing platforms essentially meant I was “purchasing” music when I wasn’t truly owning it. I decided to change my approach. I lost money and didn’t actually possess my music. Because I had never truly bought the music in the first place, my wallet disagreed with the arrangement. That realization made me uneasy about the entire situation. Additionally, DVDs turn out to be much more cost-effective to own. Beacon of Hope Discount
‘very cluttered‘
It’s quite cluttered. I keep the CDs in a disc folder and discard the cases. While some may consider it sacrilege, it’s a satisfying compromise for me. Seven Highter
‘I’m not fixated on the format‘
Having films in digital format is too convenient for me to go back to physical formats. I do, however, continue to buy DVDs and Blu-rays of movies that aren’t digitized, but it’s a hassle to remove the DVD from its case, go to the DVD player, and start it up. …With digital media, you can initiate a movie in moments, regardless of your location. I’m not hooked on any particular format or medium. The main desire is to be able to watch our favorite movies whenever and wherever we want, and digital media is the best option for that. bf_Silver Town
‘I wasn’t intrigued until DVDs were introduced‘
Collecting movies was never as popular as amassing books or music (CDs, records, tapes). I had no inclination toward it until DVDs made their debut.
What I miss about the rise of physical media is the ability to visit someone’s home, peruse their collection of books, records, and DVDs, and discover their diverse interests. It’s a conversation starter. Jifujiji
DVDs on display in HMV stores in London. Photo: David Levin/The Guardian
‘Biggest film loss since the fires in the old studio vaults‘
We are witnessing the greatest loss of films since the fires that ravaged the old studio vaults. While some may argue that inaccessible films still exist somewhere, what if no one is able to view them?
Furthermore, digital formats are subject to frequent changes. Eventually, all digital copies of films will become obsolete. Will Disney or any other entity go to the lengths and expense of transferring all their popular movies to a new format? Possibly.
But will they undertake the arduous and costly task of migrating thousands of potentially forgotten films that haven’t seen the light of day in years and are buried in long-unused databases? Highly unlikely. son of the desert
‘I no longer live like an obsessive hoarder‘
Two years ago, I donated thousands of DVDs and Blu-rays to charity shops. I’ve abandoned the life of an obsessive hoarder and now find more peace of mind. With numerous old and new titles to watch, there are discs in my possession that I’ve never viewed in decades, some of which I’ve even given away while still in their original shrink wrap. Had streaming been available 30 years ago, it might have paid off my mortgage. R Gouveia
‘Film production courses‘
One of the reasons I’ve bought and continue to purchase numerous DVDs over the years is for the bonus content such as director commentaries, behind-the-scenes features, and interviews with cast and crew. While David Fincher’s “Seven” may be available on some random streaming service, the DVD’s commentary track alone is a treasure trove for film enthusiasts. sagarmatha 1953
‘DVDs are delicate and not everlasting‘
I still retain all my DVDs and am actively acquiring new ones. Many movies are not consistently available on streaming services, if at all, hence retaining them as physical media is crucial. The only challenge is that DVDs are susceptible to damage and cannot stand the test of time. The same can be said for DVD players. I’ve contemplated buying a new DVD player as a backup. While I do utilize a streaming service, it often has limited offerings and I struggle to find what I’m looking for, particularly when it comes to “older” movies from the 1920s, 1930s, and 1970s. Recently, I revisited the original “Ladykillers” – the remakes just don’t compare. about
‘It’s not an either-or situation‘
For me, it’s not about choosing one over the other. Streaming (via the usual platforms) has its place. It allows for discovering new movies or trying something different. Physical media, on the other hand, enables me to build my collection of movies that I can’t stream or that I prefer to own while watching them again. iron moog 007
After spaceflight, astronauts often experience symptoms that affect their sensory systems, such as unsteadiness when walking or standing, blurred vision, and fatigue. These symptoms are called Bilateral vestibular disorder or BVP. Patients on Earth can also experience BVP, but they have different symptoms than astronauts who suffer from BVP. Scientists believe these differences occur in the part of the sensory system responsible for tracking head movement and body orientation in space. This includes the set of nerves in your ear. vestibular nerve.
Astronauts experience lower gravity than on Earth. Under these conditions, the organs in the inner ear that our brains use to sense head movement and spatial orientation don’t work properly. This makes it difficult for astronauts to determine their body’s actual position, movement, and altitude. After returning to Earth’s gravity, astronauts typically need to undergo rehabilitation to correct any resulting balance and coordination problems.
French researchers recently compared the symptoms of BVP experienced by astronauts during readjustment to Earth’s gravity with those of BVP patients on Earth. The team wanted to test strategies to help people on Earth adapt to BVP during rehabilitation, in hopes of establishing or improving rehabilitation strategies for astronauts returning from space.
The researchers recruited 28 astronauts, seven men and 11 women, with an average age of 48, all of whom lived on the spacecraft. international space station For 6 to 11 months. They also recruited 30 patients, including 13 men and 17 women with an average age of 61 years, all of whom had BVP but had never left Earth. They asked each participant to perform his five tests designed to examine mobility and reaction time.
To examine participants’ balance, we measured the time it took them to stand up from a sitting position and establish a stable posture.“Standing test”. They then measured how long it took them to walk around the cone. “Walk around test”. We then asked participants to: from heel to toe This is called the “tandem walk test” and is similar to walking a tightrope with your arms crossed in front of your chest. The researchers recorded each participant repeating this procedure twice and examined each recording to determine the correct number of steps taken during each trial.
The researchers also asked patients to track their progress for one minute while wearing the device. Virtual reality (VR) devices and earphones that mask external noise. The VR device instructed the patient to press the “run” button on the laptop mouse, wait 1 minute, and then press the “stop” button. They used this test, known as the “Duration Judgment Test,” to see how well each participant performed. I felt the passage of time. Finally, the participant who turned on the VR device was asked to respond as quickly as possible to a blue square that was displayed for 50 ms at random intervals.reaction time test. The researchers gave these tests to astronauts about three months before launch, once a month during spaceflight, two hours after returning to Earth, and 24 hours after returning to Earth. A test was conducted.
Researchers found that earthbound BVP patients walked around the cone more slowly than Astronauts did so during and after spaceflight. They also found that BVP patients took fewer correct tightrope steps than astronauts in the 24 hours after returning to Earth. However, the time it took for BVP patients on Earth to calm down during the sit-to-stand test fell between the day the astronauts landed and 24 hours later. Both BVP patients and astronauts who remained on Earth were unable to properly sense the passage of time and were slow to respond to blue squares.
The researchers concluded that problems with balance, sensing the passage of time, and reaction time experienced by astronauts after spaceflight are similar to those experienced by BVP patients on Earth. Therefore, they proposed that these problems, similar to those in earthbound patients, are caused by central nervous system dysfunction that affects the senses. To reduce these post-flight health problems, the researchers recommended that astronauts undergo training designed to improve their vision, hearing, and touch during orbit and after spaceflight.
The researchers cited two limitations of the study: the age difference between the astronauts and the Earth-bound group, and the fact that the BVP subjects on Earth received rehabilitation therapy, while the astronauts did not. I was warned that there was a point. They also were unable to test the astronauts post-flight to properly diagnose central nervous system conditions, so further research is needed to confirm whether the central nervous system is causing these symptoms. He pointed out that.
On February 21, a meter-wide space capsule landed in the Utah desert after eight months in orbit. The cargo is a batch of ritonavir, an antiviral drug used to treat HIV and COVID-19.
Carried out by a California startup Varda Space Industries, the mission aims to showcase the potential of automated drug manufacturing in space, potentially opening doors for more efficient ways to develop medications.
Varda’s W-1 mission was launched on a SpaceX Falcon 9 rocket in June 2023. The capsule itself weighs about 90 kg, capable of producing nearly 100 kg of product during several months in orbit.
However, the initial mission produced only a small amount of ritonavir during a 27-hour test run.
In-flight analysis indicates that the manufacturing process was executed as planned, and while final results are pending, Varda is gearing up for its second mission carrying its first commercial payload.
read more:
But why the focus on space?
Experiments in microgravity have shown that it’s possible to produce pharmaceuticals more efficiently in space compared to on Earth. The unique conditions in space enable the growth of crystals used in medications to be more perfect and uniform.
Pharmaceutical companies are leveraging insights from space experiments to enhance manufacturing processes on Earth. Crystals grown in space demonstrate exceptional properties that could lead to more effective drugs than those produced on Earth.
Varda and other companies are exploring the potential of harnessing microgravity to develop new drugs, ushering in a new era of pharmaceutical innovation.
Economics present a challenge in producing materials in space for Earth use, but advancements in reusable spacecraft and versatile space labs are driving costs down and opening up new possibilities for scientific discovery.
Experts like Dr. Ann Wilson and Dr. Katie King are at the forefront of research in crystal growth and pharmaceutical development in microgravity, shaping the future of space-based manufacturing.
About our experts
Dr. Ann Wilson, a professor at Butler University, has conducted groundbreaking research on crystal growth in microgravity, published in the Journal of the American Chemical Society.
Dr. Katie King, with expertise in nanomedicine, is leading research on pharmaceutical development in microgravity and is a key figure in advancing medical science through space-based experiments.
NASA stays in touch with its space probes, like Voyager 2, through the Deep Space Network (DSN), which consists of radio receiving antennas located in three different spots globally. These locations include Goldstone in California, Robredo near Madrid, and Tidbinbilla near Canberra.
Voyager 2 can only be observed from the southern hemisphere, making the DSS-43 antenna at the Australian site the sole antenna on Earth that can communicate with the spacecraft.
Currently positioned more than 20 billion kilometers from Earth, Voyager 2 has a transmitter that outputs approximately 23 watts (around eight times more powerful than a typical cell phone). By the time a radio signal reaches Earth, it has only about one-tenth of this power.
undefined
To detect this extremely faint signal, DSS-43 and Voyager 2’s transmitters use narrowband, high-frequency signals that are highly directional and transmitted at slow bit rates.
Advanced signal processing techniques, minimal interference, and the fact that radio signals can travel through space with little obstruction allow DSS-43 to overcome long distances.
The antenna can transmit a signal to Voyager 2 at a much higher power level (up to about 400,000 watts) than it receives. This strong output can be easily picked up by the spacecraft even at far distances.
This piece (by Elouise Pace) addresses the question, “How can we communicate with Voyager 2, which is billions of miles away?”
If you have inquiries, please contact us at:questions@sciencefocus.comor reach out to us viaFacebook,XorInstagramPage (please include your name and location).
Explore our topFascinating factsMany more fascinating scientific pages.
New photos from the NASA/ESA Hubble Space Telescope show nearby irregular galaxy UGC 5829, also known as the Spider Galaxy.
This Hubble image shows UGC 5829, an irregular galaxy located approximately 30 million light-years away in the constellation Sera. Image credits: NASA / ESA / Hubble / R. Tully / M. Messa.
UGC 5829 It is located approximately 30 million light-years away in the constellation Serra.
“Although this relatively faint galaxy has not been observed very often, it has the characteristic soubliquet of a spider galaxy,” Hubble astronomers said in a statement.
“Perhaps the distorted galactic arms with glowing tips that form stars remind us of the clawed legs of arachnids.”
“Somewhat confusingly, there is another galaxy known as the Spiderweb galaxy that has a very similar nickname but is otherwise completely separate.”
“Despite the fact that this galaxy is about 300 times further away from Earth than the Spider Galaxy, it has been imaged more extensively.”
“Fortunately, the ability to accurately identify galaxies does not depend on chance names.”
“Rather, known galaxies are recorded in at least one catalog, such as the Uppsala Galaxy Catalog, and are often recorded in multiple catalogs. It has been given a name.”
“This same galaxy has been given several different names in various other catalogs,” they added.
“For example, LEDA 31923 in the Lyon-Meudon Extragalactic Database; MCG+06-24-006 in the Galactic Morphology Catalog; and SDSS J104242.78+342657.3 in the Sloan Digital Sky Survey Catalog.
“Spiderweb galaxies are not all recorded in the same catalog; each catalog is necessarily limited in scope. However, they are included in the LEDA catalog as LEDA 2826829.”
“It's clearly easier to avoid confusing the boring but unique names LEDA 31923 and LEDA 2826829 than the interesting but easily confused names Spider and Spiderweb.”
This is based on data obtained through four filters. Color is obtained by assigning different hues to each monochromatic image associated with an individual filter.
The new Hubble images taken on January 5 and 6, 2024 show many large storms and small white clouds in Jupiter’s atmosphere, indicating a lot of activity.
Jupiter is revisited by the NASA/ESA Hubble Space Telescope in these images taken on January 5 and 6, 2024, capturing both sides of the giant planet. Image credit: NASA / ESA / STScI / Amy Simon, NASA Goddard Space Flight Center.
Jupiter’s colorful clouds create a constantly changing display of shapes and colors in its atmosphere.
The planet experiences various stormy weather patterns, including low-pressure systems, high-pressure systems, wind shear, and the Great Red Spot, the largest storm in the solar system.
Jupiter is covered by a cloud of ammonia ice crystals, about 48 km thick in an atmosphere that is tens of thousands of kilometers deep, resulting in the planet’s distinctive stripes.
The banding effect is caused by air moving at different latitudes and speeds of up to 563 km per hour.
The zones, where the atmosphere rises, are brightly colored, while the belts, where the air falls, are darker. Storms and turbulence occur when these opposing flows interact.
“The left Hubble image shows the iconic Great Red Spot prominently in Jupiter’s atmosphere,” stated Hubble astronomers.
“To the lower right is a feature known as Red Spot Junior, a high-pressure system resulting from storms in previous years.”
“This year, it appears to be turning red again, possibly due to compounds like sulfur and phosphorus.”
“In the right image, storm activity is visible in the opposite hemisphere, with two distinct storm systems rotating in opposite directions.”
These storms are expected to pass each other as they repel through their rotations.
“The presence of many storms and clouds in Jupiter’s atmosphere indicates a high level of activity,” said Dr. Amy Simon, OPAL project leader and astronomer at NASA Goddard Space Flight Center.
“Despite its small size, Jupiter’s moon Io shows volcanic activity, visible through Hubble’s sensitivity to blue and violet wavelengths.”
SpaceX’s third and most ambitious Starship test flight appears to have been at least partially successful today, as it reached space, conducted fuel transfer tests, and traveled farther and faster than ever before. It looked like. However, the spacecraft failed to make its planned landing and appears to have either self-destructed or burned up in Earth’s atmosphere.
After launching from SpaceX’s property in Boca Chica, Texas, the first and second stages separate cleanly and the first stage (the booster that lifts the craft during the first part of its journey) descends to land at sea. started. SpaceX ultimately intends to recover and reuse both stages, but these early test flights are slated for a safer, easier water landing for both.
The first stage steered itself downhill, but seemed to struggle to slow its fall as intended and appeared to hit the sea at breakneck speed.
The second stage reached an altitude of approximately 230 kilometers and successfully opened and closed the payload door as a test. It was also possible to swap fuel from one tank to another, an experimental first step towards eventually refueling from one spacecraft to another. This is essential for long-range missions.
However, during reentry, the spacecraft reached such high temperatures that live video showed glowing plasma around the surface, and both video and telemetry data were lost.
The spacecraft would attempt to reignite the Raptor engines, something never before done in space, as it entered the atmosphere in a controlled manner at about 27,000 kilometers per hour. However, the relighting portion of this mission was omitted by the company, and the spacecraft was subsequently lost.
A view of SpaceX’s Starship taken nine minutes into the mission.
space x
US Federal Aviation Administration permission granted In preparation for the test flight on March 13th, the day before the scheduled launch date, tweeted SpaceX said it “met all safety, environmental, policy and financial responsibility requirements.”
starship It is the most powerful rocket ever made. The 121-meter-long ship consists of her two stages, a booster and a spacecraft, both of which are designed to be reusable, keeping costs down and allowing quick turnaround between flights. Masu.
Starship heated up during re-entry into Earth’s atmosphere after a flight of approximately 47 minutes, leading to the loss of the spacecraft.
space x
Today’s announcement marks the company’s third Starship announcement. In the first test in April last year, the first and second stages exploded before they separated, and in the test in November, the upper second stage reached space, but, which self-destructed when it stopped transmitting data, following the explosion of the first stage. Immediately after separation.
The ultimate goal of this project is to land humans on the moon and later on Mars.
SpaceX's third and most ambitious Starship test flight appears to have been at least partially successful today, as it reached space, conducted fuel transfer tests, and traveled farther and faster than ever before. It looked like. However, the spacecraft failed to make its planned landing and appears to have either self-destructed or burned up in Earth's atmosphere.
After launching from SpaceX's property in Boca Chica, Texas, the first and second stages separate cleanly and the first stage (the booster that lifts the craft during the first part of its journey) descends to land at sea. started. SpaceX ultimately intends to recover and reuse both stages, but these early test flights are slated for a safer, easier water landing for both.
The first stage steered itself downhill, but seemed to struggle to slow its fall as intended and appeared to hit the sea at breakneck speed.
The second stage reached an altitude of approximately 230 kilometers and successfully opened and closed the payload door as a test. It was also possible to swap fuel from one tank to another, an experimental first step towards eventually refueling from one spacecraft to another. This is essential for long-range missions.
However, during reentry, the spacecraft reached such high temperatures that live video showed glowing plasma around the surface, and both video and telemetry data were lost.
The spacecraft would attempt to reignite the Raptor engines, something never before done in space, as it entered the atmosphere in a controlled manner at about 27,000 kilometers per hour. However, the relighting portion of this mission was omitted by the company, and the spacecraft was subsequently lost.
US Federal Aviation Administration permission granted In preparation for the test flight on March 13th, the day before the scheduled launch date, tweeted SpaceX said it “met all safety, environmental, policy and financial responsibility requirements.”
starship It is the most powerful rocket ever made. The 121-meter-long ship consists of her two stages, a booster and a spacecraft, both of which are designed to be reusable, keeping costs down and allowing quick turnaround between flights. Masu.
A view of SpaceX's Starship 9 minutes into its mission
space x
Today's announcement marks the company's third Starship announcement. In the first test in April last year, the first and second stages exploded before they separated, and in the test in November, the upper second stage reached space, but , which self-destructed when it stopped transmitting data, following the explosion of the first stage. Immediately after separation.
The ultimate goal of this project is to land humans on the moon and later on Mars.
NASA has released a surprising new image of the little-known dwarf galaxy LEDA 42160 taken by the NASA/ESA Hubble Space Telescope.
This Hubble image shows dwarf galaxy LEDA 42160 located 53.5 million light-years away in the constellation Virgo. Image credit: NASA / ESA / Hubble / M. Sun.
Also known as MCG+02-32-161, VCC 1725, ALFALFA 3-327, or AGC 220849, this galaxy is a member of a massive galaxy cluster called the Virgo Cluster.
“LEDA 42160 is one of many astronomers to force their way through the relatively dense gas in the Virgo cluster,” Hubble astronomers said.
“The pressure exerted by this intergalactic gas, known as the Ram pressure, has a dramatic effect on star formation in LEDA 42160, which is currently being studied using Hubble.”
“LEDA 42160 falls into the following categories.” magellanic spiral galaxyIn the de Vaucouleurs galaxy classification system, it is abbreviated as Sm. ”
“Magellanic spiral galaxies can be further classified as barred galaxies (SBm), barred galaxies (SAm), and weakly barred galaxies (SABm), where the ‘bar’ refers to the elongated bar at the center of the galaxy. ”
“Generally speaking, the Magellanic Spiral Galaxy is a dwarf galaxy with only one spiral arm.”
“They are named after their prototype SBm galaxy, the Large Magellanic Cloud.”
“The Magellanic Spiral Galaxy is an interesting example of how the classification of galaxies is actually more nuanced than just spiral, elliptical, irregular, etc.”
Color images of LEDA 42160 consist of observations from. Hubble’s advanced survey camera (ACS) in the near-infrared and optical portions of the spectrum.
Two filters were used to sample different wavelengths. Color is obtained by assigning different hues to each monochromatic image associated with an individual filter.
NASA has released a beautiful photo of spiral galaxy NGC 4423 taken by the Hubble Space Telescope.
This Hubble image shows spiral galaxy NGC 4423 about 55 million light-years away in the constellation Virgo. Image credit: NASA / ESA / Hubble / M. Sun.
NGC4423 It is located in the constellation Virgo, about 55 million light years away.
Also known as IRAS 12246+0609, LEDA 40801, or VCC 971, this spiral galaxy is approximately 35,000 light-years in diameter.
beginning spotted Discovered on April 13, 1784 by German-born British astronomer William Herschel, NGC 4423 is a member of the Virgo cluster.
“In the new image, NGC 4423 appears to have a highly irregular, tubular shape, so it may be surprising to learn that it is actually a spiral galaxy,” Hubble astronomers said in a statement.
“Knowing this, we can distinguish between the galaxy's denser central bulge and the less dense surrounding disk, which makes up the spiral arms.”
“If you looked at NGC 4423 head-on, it would resemble the shape we most associate with spiral galaxies: a spectacular curve spreading out from a bright center and interspersed with darker, dimmer, less populated regions. This is the arm you are drawing.”
“However, when observing the sky, we are constrained by the relative position of the earth and the object we are observing. We cannot simply change the position of the earth to get a better view of NGC 4423 head-on. .”
“Of course, celestial bodies are not stationary in space; they often move at very high speeds relative to each other.”
“This may suggest that even if the galaxy is moving in a coincidental direction relative to Earth, if you travel far enough you may be able to see it from a substantially different perspective. I don’t know.”
“While this is theoretically possible, in reality the distances in the universe are too long and human lifespans are too short for significant differences in relative alignment to occur.”
“In other words, this is more or less the view of NGC 4423 that we will always have.”
New images of NGC 4423 consist of observations from. Hubble's advanced survey camera (ACS) in the near-infrared and optical portions of the spectrum.
This is based on data obtained through two filters. Color is obtained by assigning different hues to each monochromatic image associated with an individual filter.
Singapore, Singapore, February 29, 2024, Chainwire
binary x Today we announced the long-awaited launch of our first product Initial game offering This year's (IGO), project matthew. Project Matthew is a space-building simulation game that lets players experience what it's like to work in space. It is officially known in-game as Planet Matthew. In the game, players work not as astronauts but as builders and engineers who make space habitable for new civilizations.
Own ERC-404 NFT tokens and exchange them for in-game lands
Players have the opportunity to own the split ERC-404 NFT This can translate into ownership of land, weapons, and other materials in the game. ERC-404 tokens provide users with sufficient liquidity while opening up various possibilities for future ownership, such as shared ownership of land, buildings, and resources.
The game is expected to encourage collaboration and a sense of community, opening up the game to a wider audience, without compromising the exclusivity of in-game NFT ownership, through its innovative use of ERC-404 tokens. Masu.
The Story of Project Matthew: A Space-Building Simulator
Humanity has discovered a not-too-distant planet called Matthew that may be habitable. As a pioneer of space life, players will design and manage their own industrial plants, mine resources, build robots to help work in the plants and fight other intergalactic forces, and build their own space cities. You will have the opportunity to build. From the root.
lead a virtual army
Players can recruit an army of robots with different skills and abilities to challenge their enemies on the battlefield and earn huge rewards. Battlefields are divided into different levels of difficulty. The more difficult the level, the bigger the reward.
explore the universe
Exploration is one of the main ways to obtain rewards and resources in Project Matthew. Gameplay includes a collection of nearby and distant planets waiting to be explored.
“Project Matthew is the first IGO project for the first half of 2024. We wanted to give players the opportunity to experience living and working in space. Julio, Head of Investments at BinaryX. We are ready to support high-end games on the IGO platform.”
BinaryX is a leading Web3 gaming platform dedicated to creating immersive and engaging gaming experiences, including: i hero and pancake mayor,
Built on the BSC chain, BinaryX leverages the latest technologies in blockchain and AI to give over 100,000 players ownership of in-game assets, participation in the decision-making process, and the true potential of Web3 games. provides a unique opportunity to experience
For more information and information about BinaryX, please visit: www.binaryx.pro
A European satellite that is malfunctioning is expected to fall to Earth and plunge uncontrollably through the atmosphere on Wednesday.
The European Space Agency said that most of the dead satellite is anticipated to burn up in the atmosphere and any surviving debris is unlikely to cause harm. However, it is challenging to determine the exact time and location of the spacecraft’s fall.
According to the Latest blog posts, the space agency estimated that the re-entry time will be around 10:41 a.m. ET on Wednesday, which would take approximately two hours. Based on the satellite’s orbit, the spacecraft was expected to be somewhere off the coast of North America in the Pacific Ocean during that period.
The space agency explained that much of the uncertainty about the re-entry of satellites is due to the challenge of predicting atmospheric density. Changes in air density, influenced by solar activity, impact the drag experienced by objects passing through Earth’s atmosphere.
The space agency stated that although there is uncertainty about the re-entry point of the dead satellite, it is unlikely to pose a threat to populated areas.
“Most of the satellites will burn out, and the surviving debris will be scattered somewhat randomly over a ground orbit averaging hundreds of kilometers long and tens of kilometers wide (this is why the risks involved are so great). “The reason for this is low),” said an expert from the agency’s Space Debris Countermeasures Office. I wrote it in a blog post.
The spacecraft, known as European Remote Sensing 2 or ERS-2, was an Earth observation satellite that collected data about Earth’s oceans, polar caps, and surface. The space agency said the satellite, launched in April 1995, was also used to monitor severe floods, earthquakes and other natural disasters in remote areas of the world.
Space dust may have brought elements essential for life to early Earth. Our planet is relatively poor in some of the elements necessary for the chemical reactions of life, but the dust that constantly drifts in from space contains many more, and when the Earth was young it was covered with glaciers. It is possible that they were gathered in
“It’s always been a shadow idea, but people were ignoring it for a number of reasons. The biggest one was that there weren’t enough ideas anywhere,” he said. say. craig walton at Cambridge University. Space dust tends to be rich in elements that are relatively difficult to obtain on Earth, such as phosphorus and sulfur, and it constantly falls in thin layers around the world.
Until now, researchers exploring the origins of such elements on Earth have focused primarily on larger objects that can deliver more elements at once, but such delivery mechanisms were They may have a hard time maintaining their pre-biological chemistry long enough to do so, Walton says. “Meteorites have long been thought to be a great source of these elements, but they release them randomly,” he says. “It’s like if I give you a big feast once, but you never eat again, you’re going to have a hard time living a happy life. You need a continuous source, and that’s what happens. It’s space dust.”
Up to 40,000 tons of space dust falls on Earth every year. Billions of years ago, that number may have been between 10 and 10,000 times higher, but that was still not enough to make individual locations particularly rich in elements important to life. Walton and his colleagues simulated how wind and water move dust and collect it in concentrations high enough to support life.
They found that glaciers are the most promising environment because they have the potential to trap large amounts of dust and are very less contaminated by dirt on land. When space dust falls on a glacier, it absorbs sunlight and heats up, melting and creating tiny holes in the ice. The hole then continues to trap more dust. Finally, the dust chamber flows into a pond at the edge of the glacier.
We can still see this process happening today, but if the Earth had been cold enough to have glaciers billions of years ago, the amount of dust would have increased and it would have been even more efficient. . “If you want to produce deposits that are really rich and have a lot of reactions that could lead to life, this is the best way to do it,” Walton says.
“We don’t know if glaciers were common on early Earth; we just don’t have good data for this period in general,” he says. ben pierce at Johns Hopkins University in Maryland. “But I think it’s worth investigating, especially if it has the potential to provide a mechanism for creating a rich primordial soup.”
The lack of data about conditions on Earth during this time makes it difficult to estimate how important cosmic dust was to the origin of life. “We’ve always had a hard time understanding what the bulk chemistry of early Earth was like,” he says. Matthew Pasek at the University of South Florida. “However, this could be an important source of extremely valuable material.”
Google and the Environmental Defense Fund on Wednesday announced a partnership to uncover the sources of climate-warming emissions from oil and gas operations that will be detected from space by a new satellite.
MethaneSAT is scheduled to launch next month and is one of several satellites being deployed to monitor methane emissions around the world to identify the main sources of the invisible but powerful greenhouse gas. There is one. The partnership is led by EDF, the New Zealand Space Agency, Harvard University and others.
Data from the satellite will be available later this year, and Google Cloud will provide the computing power to process the information.
Google also announced that it will use artificial intelligence to map oil and gas infrastructure by identifying components such as oil tanks. MethaneSAT emissions data is overlaid with Google Maps to help you understand which types of oil and gas equipment are most likely to leak.
This information will be made available through Google Earth Engine, a geospatial analytics platform, later this year. Earth Engine is free to researchers, nonprofit organizations, and news organizations.
The satellite image above shows a map of points, correctly identified as oil well pads. Google used satellite and aerial imagery to apply AI to detect infrastructure components. Well pads are shown in yellow, oil pump jacks in red, and storage tanks in blue. Google
“For energy companies, researchers, and the public sector, it's generally helpful to predict methane emissions in the most sensitive components,” Yael Maguire, Google's vice president of geographic sustainability, said on a call with reporters. “We believe this information is extremely valuable for mitigation efforts.”
The launch comes as governments crack down on short-lived sources of greenhouse gases and more than 50 major state-owned and independent oil and gas operators, from ExxonMobil to Saudi Aramco, pledge to reduce methane leakage to near zero at the COP28 climate change summit. This was done amid a promise to reduce the number of By the end of this decade.
The United States is one of the largest emitters of methane and has proposed enforcement measures to stop leaks from oil and gas operations. A new rule by the U.S. Environmental Protection Agency will allow the public to report large methane leaks to federal regulators if they have access to methane detection technology.
Mysterious new weapon could threaten satellites in Earth orbit
Key Fame/Shutterstock
According to a series of reports, the US government has privately warned lawmakers and European allies that Russia is planning to launch a nuclear-capable space weapon.
The news comes after U.S. House Intelligence Committee Chairman Mike Turner announced: vague warning It cited a “grave national security threat” and asked US President Joe Biden to “declassify all information related to this threat” for more public discussion. Since then, news reports have revealed additional details about what Russia's mystery weapon is. Here's what we know so far:
Does this mean Russia aims to deploy nuclear missiles and bombs into space?
This point remains unclear.Report from ABC News and new york times The term “nuclear weapon” may mean a weapon capable of producing an explosion involving a fission or fusion reaction.If this is true, it would be a violation of the rules 1967 Outer Space TreatyIt prohibits signatories, including Russia and the United States, from placing nuclear weapons or other weapons of mass destruction in space.
Although a nuclear explosion in space would not directly harm people on Earth, it could destroy and disable multiple satellites.When the United States detonated a nuclear bomb in low Earth orbit during that period starfish prime In a 1962 experiment, the resulting radiation damaged or destroyed about a third of the satellites in low Earth orbit at the time.
However, there is another possibility that does not involve nuclear weapons.
What else does Russia have in its nuclear capabilities in space?
Russian space weapons may simply use nuclear power to power onboard systems. PBS News Hour U.S. officials said the Russian weapon was “probably nuclear-powered.”
Russia and the United States have used various forms of nuclear power in space for decades. One form includes nuclear fission reactors, such as those found in civilian nuclear power plants, which derive their power from an ongoing nuclear chain reaction.
The United States launched an experimental nuclear reactor into space in 1965, while Russia reportedly launched at least 34 nuclear reactors aboard satellites between 1967 and 1988. World Nuclear Association.
The United States, Russia, and other countries have also launched space missions using radioisotope systems. These use heat from the natural decay of radioactive materials as a power source, but they provide much less power than nuclear fission reactors.
What does this Russian space weapon actually do?
News reports agree that Russian weapons are designed to target satellites in space, rather than directly harming anyone or anything on the ground. However, if this weapon is able to knock satellites out of orbit, these objects could fall to the planet's surface and cause severe damage. If they blow away, the resulting cloud of space junk could threaten other satellites and even the International Space Station. This could even trigger a Kessler syndrome scenario, where a chain reaction of space debris gets out of control and makes it virtually impossible for satellites to survive in Earth orbit.
Various countries, including Russia, the United States, China, and India, have previously tested anti-satellite weapons (ASATs), which shoot missiles from Earth and shoot down objects in orbit. But countries have been much quieter about whether they have actually deployed ASAT weapons into space.
What does Russia say about the potential of this weapon?
A spokesperson for Russian President Vladimir Putin's government reportedly called the U.S. warning a “malicious hoax” aimed at pushing the U.S. Congress to pass legislation authorizing more military aid to Ukraine. Ta. Reuters. Since Russia launched a full-scale invasion of Ukraine in February 2022, the United States and Europe have supported Ukraine's military resistance against Russian forces.
Why does Russia need new anti-satellite weapons?
Satellites are important for both military and civilian applications that have a huge impact on modern life. They monitor the weather, power GPS systems, provide space-based surveillance, and enable communications. For example, SpaceX's Starlink satellite constellation has proven essential to the Ukrainian military in coordinating drone and artillery fire against Russian forces on the battlefield.
A U.S. official quoted by PBS NewsHour suggested that Russian space weapons have “electronic warfare capabilities to target U.S. satellites critical to U.S. military and civilian communications.”
According to some sources, Russia has spent years developing a space-based electronic warfare system that can jam communications signals to and from satellites. report This is by the Secure World Foundation, a space security organization based in Colorado.Victoria Samson at the Secure World Foundation Said Such a Russian space weapon could be powered by nuclear power.
So how dangerous is this new anti-satellite weapon?
The good news is that if this space weapon sabotages satellites rather than physically destroying them, it will not cause a catastrophic space debris scenario like Kessler syndrome. However, it can still be dangerous.
Space weapons that use electronic warfare to jam signals could effectively disable satellites. That could disrupt critical battlefield communications, render GPS guidance systems inoperable and obscure reconnaissance satellites, making it more difficult for the United States to coordinate military forces around the world.
Despite its recent emergence, these technologies and concepts are not new.
The United States and the Soviet Union developed and tested anti-satellite weapons (ASAT) during the Cold War. Both nations also regularly utilized nuclear power in space.
As early as 1959, the United States initiated the development of anti-satellite missiles due to concerns about Soviet efforts to do the same. This led to a 1985 test launch by an F-15 fighter jet, which successfully destroyed a satellite by ejecting its payload at an altitude of 36,000 feet and hissing into orbit, carrying a deteriorating U.S. aircraft, according to the U.S. Air Force Museum.
A paper published by the Air Force’s Air University Press in 2000 stated that from 1969 to 1975, the U.S. government developed an anti-satellite system using existing nuclear missiles in “direct ascent” mode to destroy space targets.
In addition to nuclear weapons, the U.S. government placed its first nuclear-powered satellite into orbit in 1961. The Soviet Union similarly developed and deployed comparable technology that powered many satellites during that period.
History has demonstrated that these developments are not without risks. In 1978, a Soviet nuclear-powered satellite malfunctioned and fell from the sky, spreading radioactive debris over northern Canada.
However, what has not yet been publicly revealed is the existence of a Russian nuclear-powered satellite carrying weapons.
According to a 2019 technical essay published in The Space Review, nuclear-fueled satellites equipped with powerful jammers that can block communications and other signals over large areas for extended periods may be installed. Experts have responded to this week’s news.
Bowen, of the University of Leicester, stated that such a design would be “very expensive” and “waiting for something to go wrong could create a nuclear environmental disaster in orbit.”
Ultimately, while none of this technology is new, the actual implementation would certainly be considered an escalation, according to Bowen and Bugerin.
Some have questioned whether the disclosure is purely political in nature, rather than a military threat.
Kremlin spokesman Dmitry Peskovin suggested that the White House’s actions may be an attempt to manipulate Congress to vote on a funding bill that would provide new aid to Ukraine. He raised the possibility of a diversionary tactic from the other side.
Francesca Giovannini, executive director of the Atomic Stewardship Project at Harvard Kennedy School, noted that “Russia has long been attempting to develop weapons in space,” indicating potential misinformation or diversion tactics being employed.
Griffiths appears to have demonstrated to her how education is done. “He pointed to a hanging sphere in the science museum that changed its appearance from planet to planet and declared, 'This is Mars!'” An employee gently informed him that it was actually the sun. All I had to do was give it to you. Still, Griffith exclaimed, “That's Saturn!” As the Earth changes. The employee interjected. “No, no, that’s Jupiter.”
Back in 1991, one of the first Ig Nobel Prizes was awarded to then-U.S. Vice President Dan Quayle. Quayle was given additional duties, and he became the chairman of something called the National Space Council. He was often in the news for educating the masses. statement Something like:
“[It’s] The time has come for humanity to enter the solar system. ”
“We saw the pictures [of Mars] We believe that where there are canals, there is water. ”
“Really, very strange people can get into sensitive positions and have a huge impact on history.”
Ig Nobel Prize Quote explained He praised Quayle for being a “consumer of time and occupier of space” who “demonstrated the need for science education better than anyone else.”
As we watch Vim for Education spread from country to country, the feedback is encouraging. No matter where the sky is, the sky is the limit.
base notes
Andy Howe celebrates a somewhat musical discovery about fish that spend much of their time on the muddy ocean floor. Does Andy Howe delight in details? And how! He said: nature communications) This concerns the apparently suspicious noises of the Plainfin Midshipman, a species also known as `california singing fish'`. They are endowed with a “sonic swim bladder” that allows them to communicate through modulated, trumpet-like hums and growls. There is a double resonance here as the lead author is his A Bass. ”
“Bass” is Andrew Bass, a professor of neurobiology and behavior at Cornell University in New York. When Bass isn't out at sea chasing fish, he spends his time at the office. mud hole. I can't help but notice that Bass's feedback is imbued with nominative determinism.
light entertainment
Retired internist John Innes rallies in Call for Feedback (December 9, 2023) to refute the old adage that “Medicine is primarily about entertaining the patient; nature cures disease.” or asked for first-hand testimony in the affirmative.
He sets the scene first. “In the 1890s, Faroese and Danish physician Niels Finsen showed that ultraviolet light could treat tuberculosis (TB) in the skin. This work earned Finsen the Nobel Prize in 1903. The first studies used artificial ultraviolet light, which was widely used to treat tuberculosis in the 1920s and 1930s.
“However, it was already known that natural ultraviolet light was present in sunlight. This was one of the factors that encouraged the development of sanatoriums for the treatment of tuberculosis. In the 1950s, antibiotics were introduced. After its introduction changed the treatment of tuberculosis, ultraviolet light therapy was lost to history.
John then describes his experiences as a physician specializing in infectious diseases in Birmingham, England in the 1980s: At that time, all new entrants to nurse training were to be offered the tuberculosis vaccine if they had not already done so. In her case, an ulcer appeared at the injection site and gradually enlarged over two months to about 8 centimeters in width. I recommended antibiotics. However, she did not have time to pick up her prescription because she was scheduled to go on vacation the next morning. So I told her to postpone her treatment and come back in 4 weeks.
“She came back after spending two weeks sunbathing on the beach near Tangier. The ulcer had healed and she didn't need anything more. So she left it alone while nature healed her illness. was enjoying it.”
loop soup
What is loop soup? It's hard to say. It's difficult to say succinctly.
Wojtek Furmanski and Adam Kolawa of the California Institute of Technology appear to have injected the phrase into the world of physics in 1987 in the middle of a 35-page paper called `Yang-Mills vacuum: an attempt at lattice loop calculus`Published in the magazine Nuclear Physics B.
Loop soup is only mentioned once. This is their word. “This medium is still far from an asymptotic ‘loop soup’ and is beyond our reach.”
This text may be incomprehensible to those without a deep education in nuclear physics. Still, the phrase stuck. Just 33 years later, Valentino Voigt and Matthew Kleban of New York University `New recipe for Brownian Loop Soup`This may definitely whet your appetite.
Mark Abrahams hosted the Ig Nobel Prize ceremony and co-founded the magazine Annals of Improbable Research. Previously, he was working on unusual uses of computers.his website is impossible.com.
Have a story for feedback?
You can email your article to Feedback at feedback@newscientist.com. Please enter your home address. This week's and past feedback can be found on our website.
Astronomers using the NASA/ESA Hubble Space Telescope have obtained a surprising new perspective of spiral galaxy UGC 3912.
This Hubble image shows UGC 3912, a small spiral galaxy located 63 million light-years away in the constellation Canis Major. Image credit: NASA / ESA / C. Kilpatrick, Northwestern University / Gladys Kober, NASA and The Catholic University of America.
UGC 3912also known as IRAS 07315+0439 or LEDA 21303, lies. 19.3 megaparsecs It is located in the constellation Canis Minor (63 million light years) from Earth.
“UGC 3912 is classified as a spiral galaxy, but you wouldn't know it from this detailed Hubble image,” said Hubble astronomers.
“This galaxy's distorted shape typically indicates a gravitational encounter with another galaxy.”
“When galaxies interact, meaning they bump into or collide with each other's gravitational fields, their stars, dust, and gas can be pulled into new paths.”
“UGC 3912 may have once been an organized-looking spiral, but now it appears to have been bent out of shape by a giant thumb.”
“Fortunately, when galaxies interact, individual stars and objects orbiting them remain intact, even though their orbits change dramatically and the shape of the galaxy as a whole changes.”
“That's because the distances between stars in galaxies are so great that they simply keep moving along new orbits without colliding with each other.”
Astronomers are studying UGC 3912 as part of their investigation into supernova activity. Supernova activity is when a star at least eight times the size of the Sun explodes at the end of its life.
“Hubble studies hydrogen-rich phenomena known as supernovae, one of several types of supernovae. Type II supernova” they explained.
“Although enough Type II supernovae have been observed, they exhibit highly variable properties in brightness and spectroscopy and are not well understood.”
The NASA/ESA Hubble Space Telescope has captured an excellent image of the interacting spiral lens galaxy pair Arp 140.
Lenticular galaxy NGC 274 can be seen on the right side of this Hubble image, and barred spiral galaxy NGC 275 can be seen on the left side. Image credit: NASA / ESA / R. Foley, University of California, Santa Cruz / Gladys Kober, NASA and The Catholic University of America.
astronomer using NASA/ESA Hubble Space Telescope They captured a striking photo of NGC 5427, which is part of the interacting galaxy pair Arp 271.
This Hubble image shows NGC 5427, a spiral galaxy located about 120 million light-years away in the constellation Virgo. Image credit: NASA / ESA / R. Foley, University of California, Santa Cruz / Gladys Kober, NASA and The Catholic University of America.
Alp 271 It was originally discovered in 1785 by German-born British astronomer William Herschel.
It is located about 120 million light-years away toward the constellation Virgo, and its extent is about 130,000 light-years.
It is unclear whether the interaction experienced by NGC 5426 and NGC 5427 will end in a collision and ultimately lead to the merger of the two galaxies, or whether the galaxies will simply experience a very close encounter.
It is absolutely certain that they are already interacting with each other, as material has been stripped from galaxies to create bridges of stars and dust that connect them.
In the distant future, our Milky Way galaxy will undergo a similar collision with the Andromeda galaxy, which is currently located about 2.6 million light-years away from the Milky Way.
“NGC 5426 is below NGC 5427 and outside the frame of this image,” Hubble astronomers said.
“However, the gravitational effects of this pair can be seen in the distortion of the galaxy and the cosmic bridge of stars seen in the lower right region of the image.”
“NGC 5426 and NGC 5427 are locked in an interaction lasting tens of millions of years.”
“Whether they will eventually collide and merge is still uncertain, but their mutual attraction has already led to the birth of many new stars.”
“These young stars are visible in the faint bridge connecting the two galaxies at the bottom of the image.”
“Such bridges provide a path for the two galaxies to continue sharing gas and dust that will form new stars.”
“We believe Arp 271 serves as a blueprint for future interactions between the Milky Way and Andromeda galaxies, which are expected to occur in about 4 billion years.”
The Hubble team has released a stunning photo of the face-on spiral galaxy ESO 420-13 taken by the NASA/ESA Hubble Space Telescope.
This Hubble image shows spiral galaxy ESO 420-13 facing forward. Image credit: NASA / ESA / University of Virginia A. Evans / Gladys Kober, NASA and The Catholic University of America.
ESO420-13 It is a spiral galaxy located south of the constellation Eridanus.
This galaxy, also known as LEDA 14702, IRAS 04118-3207, or 2MASX J04134969-3200252, Seyfert Galaxy.
“Dark dust lanes are visible against the backdrop of the glow of the galaxy's many stars,” Hubble astronomers said in a statement.
“About 10% of all galaxies in the universe are thought to be Seyfert galaxies.”
“They are typically spiral galaxies and have very bright nuclei, the result of a supermassive black hole at their center accreting large amounts of radiation-emitting material.”
“The centers of these active galaxies are the brightest when observed with light outside the visible spectrum.”
“Galaxies containing active galactic nuclei of this type are often so bright that the glow of the nucleus washes out the host galaxy itself.”
“But the Seyfert galaxy is unique because the galaxy itself is also visible.”
“In the case of ESO 420-13, we can enjoy the galaxy's almost perfectly round disk, brighter core, and swirling dark dust filaments.”
Astronomers observed ESO 420-13 as part of their research. bright infrared galaxy (LIRG).
“These galaxies are known to be very bright in the infrared part of the spectrum,” the researchers said.
“Galaxy interactions trigger new star-forming regions in LIRG that become extremely bright in infrared light.”
The NASA/ESA Hubble Space Telescope has taken new photos of the relatively small galaxy UGC 5189A in the constellation Leo.
This Hubble image shows UGC 5189A, an irregular galaxy about 150 million light-years away in the constellation Leo. Image credit: NASA / ESA / Hubble / A. Filippenko.
UGC 5189A It is located approximately 150 million light years away in the constellation Leo.
This galaxy, also known as ECO 5363 or LEDA 27776, was observed by Hubble in 2010 to study supernova explosions.
This special supernova SN2010jlwas notable for its enormous brightness.
“In fact, over a three-year period, SN 2010jl alone emitted at least 2.5 billion times more visible energy than the Sun emitted in the same time frame across all wavelengths,” Hubble astronomers said.
“Even after a supernova has dimmed to an unobservable level, it can still be interesting to study the environment in which it occurred.”
“This could provide us with valuable information. Supernovae can occur for a variety of reasons, and understanding the environment in which they occur can help us understand why supernovae are triggered. It will help you better understand the necessary conditions.”
“Furthermore, follow-up studies after a supernova explosion could improve our understanding of the immediate aftermath of a supernova explosion, from the powerful effects on the surrounding gas and dust to the stellar debris left behind by the supernova.”
“To this end, UGC 5189A has been observed by Hubble many times since 2010.”
This new image of UGC 5189A consists of observations from. Hubble's Wide Field Camera 3 (WFC3) Found in the ultraviolet and optical parts of the spectrum.
Two filters were used to sample different wavelengths. Color is obtained by assigning different hues to each monochromatic image associated with an individual filter.
“This image is from data collected in three recent Hubble studies of UGC 5189A, which also examined several other relatively nearby galaxies that have recently gone supernova. “Relatively nearby” in this context means approximately 100 million light years away. ” said the astronomers.
The moon mission, although a private effort, is sponsored by NASA’s Commercial Lunar Payload Services Program, which is a vital part of NASA’s initiatives to return astronauts to the moon. This initiative would enable NASA to award contracts to private companies for transporting scientific and other equipment to the moon’s surface.
“We believe this is a great approach to leverage entrepreneurship and innovation in America’s industrial base,” stated Joel Kearns, deputy assistant administrator for NASA’s Science Mission Directorate.
Kearns mentioned that partnering with private providers will allow NASA to launch more frequent and cost-effective missions to the moon.
The mission is the Peregrine lander, a part of the Commercial Monthly Payload Service Program. The mission aims to bring five NASA instruments to the moon, including instruments to measure the radiation environment on the lunar surface and spectrometers to study the abundance of substances such as hydrogen.
The mission will also carry several other non-scientific items, including payloads from Elysium Space and Celestis, which will provide a “space burial” for cremated remains to orbit or the moon.
Astrobotic’s involvement in Celestis and Elysium Space has caused controversy. Navajo President Boo Nygren expressed in a letter to NASA and the U.S. Department of Transportation last month that leaving human remains on the moon would be a “grave desecration” of a celestial body sacred to many Native cultures.
During a press conference on Friday, Astrobotic CEO John Thornton stated that he was “disappointed” that the concerns were not raised earlier, but the company was committed to “let’s do the right thing.” He added, “I hope we can find a good path forward with the Navajo Nation.”
If the Peregrine mission launches as planned on Monday, the lander will attempt to land on the moon on February 23rd in an area known as the sticky cavewhere ancient lava once flowed.
In a pre-launch briefing, Thornton stated that the Peregrine mission is a significant step for the U.S. commercial space industry. He specifically mentioned that this flight could usher in a new era of space technology and innovation for Astrobotics and the city of Pittsburgh.
“We are bringing a new cosmic state online,” he said. “If Pittsburgh can land on the moon, Pittsburgh can do anything.”
In 1957, the first man-made object was successfully launched into space and into orbit around the Earth. This was Sputnik 1, a beautifully simple Soviet spherical satellite with only four antennae.
But this historic event also marked the beginning of another, more disturbing one. It means that humans left the first space debris in orbit around the Earth.
Part of the 267-ton, 30-meter-tall rocket that launched Sputnik also became stuck in orbit. Suddenly, the world was faced with a problem we didn’t know we needed to solve: outer space littering.
Thankfully, Sputnik and the rocket debris it left behind deorbited shortly after launch and burned up in the atmosphere. However, this was not always the case. Just 66 years of space exploration has left vast amounts of detritus in orbit around Earth.
Now, NASA and the Japan Aerospace Exploration Agency (JAXA) are considering ideas to help solve this problem. The idea is to build a satellite out of wood, a widely available biodegradable material.
Space junk is currently a problem
The problems that government agencies are trying to address are big and complex, and they need to know how big the first phase of the project was. At least 130 million pieces of man-made debris are known to be orbiting the Earth, most of them flying at speeds of more than 7 kilometers per second. This is eight times faster than a normal bullet. But while this is a staggering number, some scientists believe it is a conservative estimate.
Most objects sent into space remain in space until either they deorbit and burn up on re-entry, or they are pulled away from Earth into graveyard orbits, where they orbit for hundreds of years. The majority of such objects are actually very small, less than 1 cm in diameter, from paint chips to small pieces of electronic equipment to pieces of insulation foam and aluminum.
Such tiny pieces cannot be seen from Earth, even with powerful telescopes. Therefore, we need to look for evidence left behind when it collides with other objects in space. This is no easy task.
Work to assess the scope of the problem began in earnest after five extraordinary objects, the NASA Space Shuttles, repeatedly orbited and returned. Since 1981, NASA has launched a total of 135 shuttle missions.
After each shuttle returned to Earth, it was evaluated using a fine-tooth comb to identify damage caused by orbital debris. This gives NASA a clearer picture of the problem of small pieces of dead satellites flying through space.
read more:
NASA scientists have discovered exactly what they expected: small pieces of debris just a few millimeters in diameter can cause small but powerful impacts. NASA also produced the first estimates of how degraded the debris environment is.
Prior to 1978, NASA scientists Don Kessler and Barton Coolpare had proposed a scenario they named Kessler syndrome. The phenomenon they discussed is a catastrophic event in which when a satellite is shattered by space debris, the resulting debris destroys more satellites, creating even more debris, repeating an endless chain of events. It is a chain of
Obviously, this is a big problem. So how can we slow down the rate of debris formation or eliminate it altogether? Proposed solutions include using radiation hardening to reach space within five years of launch. It involves taking the ship out of orbit.
materials (designed to be less susceptible to damage from exposure to the high levels of radiation and extreme temperatures experienced in space) and launches on reusable rockets.
Incorporate the idea of a wooden satellite. LignoSat, the name of the NASA and JAXA project, is a coffee machine built using traditional Japanese joinery techniques that houses electronics and other materials needed for space missions, much like today's CubeSats. It is a cup-sized (approximately 10x10x10cm) wooden box.
Wood samples were tested for suitability over 290 days in 2022 on the International Space Station's Kibo Japanese Experiment Module.
Magnolia coped well and performed best when exposed to intense cosmic rays and extreme temperature changes in its harsh environment. It does not burn, rot, crack, or deform, and has the important property that upon re-entry into the atmosphere, it burns up to a fine ash, leaving behind small fragments.
Lignosat prototype.Photo provided by: Kyoto University
Another advantage of wooden satellites is their reflectivity, or rather their lack of reflectivity. Currently, reflections from aluminum satellites are so bright that they can be easily spotted from Earth with the naked eye. Importantly, this reflected light can reach sensitive areas and interfere with astronomical observations.
LignoSat test launch is currently scheduled for 2024. Success could pave the way for further missions.
So will all satellites be made of wood in the near future? Unfortunately, that is unlikely. On the plus side, projects like this encourage researchers to think outside the box and can have a greater impact in the future. If LignoSat is successful, more research groups may try to introduce biodegradable materials to reduce further debris generation.
But for now, I strongly support efforts to actively track as many objects in Earth orbit as possible to reduce future collisions with matter in space.
Humans in the future may choose to live extraterrestrial lives on the Moon, Mars, or even Venus. However, the question arises of how they will continue to reproduce and survive once they get there. What happens to their reproductive systems? Is it possible for babies to be born in space?
To find answers to these questions, we interviewed space gynecologist Dr. Varsha Jain. She has published a paper from the University of Edinburgh on women and reproductive health in space.
What Does It Mean to Be a Space Gynecologist?
A space gynecologist is someone who is interested in space medicine and is also a gynecologist. Dr. Varsha Jain, the first person to be awarded this title, began this work about 10 years ago. She focuses on women’s health related to the health of astronauts.
We’ve had some huge breakthroughs for women in space, and that history starts with some pretty amazing myths. Can you tell us a few things about them?
Dr. Jain discussed how early myths caused a delay between the first woman to fly in space (Valentina Tereshkova) and the first American woman to fly in space almost 20 years later (Sally Ride). There was concern over issues like “retrograde menstruation” and how many menstrual products astronauts would need.
Have Attitudes Towards Women in Space Changed?
Dr. Jain noted a significant improvement in attitudes and how NASA supports open access and evidence-based information about female astronauts’ health. They even support the idea of female astronauts freezing their eggs before going into space.
What Happens to Our Reproductive System in Space?
Dr. Jain explained that astronauts’ hormonal cycles do not seem to change in space. Menstruation still occurs, and women can ovulate, potentially leading to fertilization and pregnancy. Although these things may be possible, the focus is currently more on keeping astronauts healthy than finding out if babies can be born in space.
What Do We Know About the Risks to Women’s Bodies and Pregnancy in Space?
Dr. Jain pointed out that radiation in space poses a risk to a developing fetus and that the effects of space travel on the body, including weightlessness and changes in blood volume, could impact pregnancy. Many unknowns still exist around this topic.
Given That There Are Still Many Gaps in Our Knowledge, How Realistic Are Plans to Start an Extraterrestrial Human Colony?
Dr. Jain believes that, while there’s much to learn and research, human curiosity will likely lead to humans colonizing other planets and moons in the future. However, she stressed that extensive research is needed to ensure the safety of such endeavors.
What Impact Could Space Travel Have on What We Know and Don’t Know?
Dr. Jain described the potential for space travel to provide answers about reproductive health and fertility. She believes that space agencies may investigate these questions in the future, potentially leading to new discoveries.
Are Citizens, Scientists, and Nations Racing to Have a Baby in Space?
Although the concept of reproductive health in space may seem fascinating, Dr. Jain emphasized the need for more funding and research in this area. She believes that reproductive health is often underfunded on Earth and that more focus and funding are necessary to understand the effects of the space environment on the human body.
About our experts
Dr. Varsha Jain is a space gynecologist at the University of Edinburgh. Her research has been published in the journals npj Microgravity, International Journal of Gynecology and Obstetrics, and Developmental Cells.
In the relatively short period of space exploration history, the moon has experienced significant changes as a result of human activity. From the historical significance of our first footprints to the damage caused by spacecraft crashes, our impact on the moon is evident and nearly preserved within the moon’s regolith.
For the past 1.1 billion years, the Moon has been in the Copernican Era, the current epoch. Now, there are calls for a new lunar era to be formally defined: the lunar Anthropocene. This proposed era started in 1959 with Russia’s first-ever landing of the Luna 2 spacecraft on the moon. With upcoming missions like NASA’s Artemis and Lunar Gateway, further changes are expected.
Dr. Justin Holcomb, a space archaeologist, and researcher at the University of Kansas, USA, was interviewed.
What markers suggest that a new era has begun on the Moon?
Unlike the Earth’s Anthropocene, the moon provides a unique setting for human activity to be recorded due to its limited systems and ability to preserve the entirety of human history. The relatively slow impact of meteorite collisions has historically been the primary cause of change on the Moon, contrasting with the addition of the human variable now present on the lunar surface.
What’s the biggest impact we’ve had there?
When humans land on the Moon, they significantly impact the surface. However, accidental impacts, such as spacecraft crashes, pose a significant risk and have occurred multiple times since 2019. These accidents jeopardize planned areas of operation and can potentially erase important historical sites on the Moon.
What else do we have left there?
Various artifacts and items have been left on the Moon, including personal items, scientific equipment, and the national emblem on India’s rover. It’s argued that the space debris on the Moon should be considered as space heritage rather than just waste, and thus, it needs to be protected as such.
How are human activities changing the Moon’s geological processes, and to what extent can humans disrupt the balance of the Moon’s system?
The impact of human activities on the Moon’s geological processes, such as the movement of lunar regolith and potential contamination of ice due to rocket fuel, presents concerns for the future. These impacts could have far-reaching consequences and affect the balance of the Moon’s system.
How will the Moon change further for future space missions after 2024?
With a focus on mining and the potential for private companies to be involved in future space missions, the Moon is expected to experience significant changes in the coming years. The increase in planned lunar missions indicates a new phase in the relationship between humans and the moon. With the rise of private space companies, the landscape of space exploration has shifted.
About our experts
Dr. Justin Holcomb, a postdoctoral researcher at the Kansas Geological Survey at the University of Kansas, has conducted research in various scholarly publications.
How will our species evolve in space? If humans were suddenly forced to board a fleet of space arks and abandon Earth, evolution by natural selection would force our bodies to adapt to the new environment. Humans will probably become extinct before we change anything.
Even assuming that air, food, and water are all synthesized and infinitely recyclable, the microgravity environment currently makes it difficult for astronauts on the International Space Station to undergo daily strenuous exercise. Bone density decreases by about 1 percent every month.
If this situation continues for several years, everyone will suffer from serious illness. Osteoporosis. If our voyage were to go into deep space, we would also have to worry about radiation. Galactic cosmic rays We will be exposed to approximately 250 times the normal background radiation we receive on Earth, and a single solar flare can be strong enough to cause radiation sickness.
Surviving this situation for decades at a time would require a spacecraft with an environment more similar to Earth than our current spacecraft. A large-diameter rotating habitat to simulate gravity and thick shielding to block radiation would be the minimum requirements. But if the conditions inside the spacecraft were exactly the same as on Earth, there would be no evolutionary pressure for our bodies to adapt.
Society will definitely evolve. Surrounded by danger and heavily dependent on technology, we are becoming more authoritative, with each person fulfilling their assigned role without question, ready to sacrifice themselves for the good of the species. It is possible to develop a principled society. This is too important to be left to the unpredictability of democratic, free-market capitalism, so a rigid hierarchy akin to the sailing ship regime of the 19th century will likely emerge.
read more:
To submit a question, please email questions@sciencefocus.com (remember to include your name and location)
Short, powerful bursts of radio waves from space are becoming increasingly bizarre. Astronomers discovered 35 of these bursts from a single object with a pattern unlike anything seen before.
sophia sheikh Researchers at California's SETI Institute and colleagues observed the object, a fast radio burst (FRB) called FRB 20220912A, during 541 hours of observation with the Allen Telescope Array in California. In each of this burst from his Fed, they discovered a phenomenon called “sad trombone”…
This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.
Strictly Necessary Cookies
Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings.
