Shackleton Crater on the south pole of the moon is an area in permanent shadow
LROC/Shadowcam/NASA/KARI/ASU
A backup of Earth-based life could be safely stored in a permanently dark spot on the Moon’s surface, without the need for power or maintenance, and could potentially be restored if life becomes extinct.
Mary Hagedorn Researchers at the Smithsonian’s National Zoo and Conservation Biology Institute in Washington, DC, and their colleagues proposed building the lunar biorepository as a response to extinctions occurring on Earth.
The plan has three main goals: to protect the diversity of life on Earth, to preserve species that may be useful for space exploration, such as those that can provide food or biological materials for filtration, and to preserve microorganisms that may be needed in the future to terraform other planets.
Hagedorn said the team wanted to identify a place that wouldn’t require people or energy to store cryogenically frozen living cells at temperatures below minus 196 degrees Celsius, the temperature at which nitrogen becomes liquid and all biological processes stop.
“There’s no place on Earth cold enough to put passive storage, which has to be kept at minus 196 degrees Celsius, so we thought about space or the moon,” Hagedorn said.
She said the team chose the lunar south pole because of a deep crater with a cold area that’s permanently in shadow. Burying the samples about two meters below the surface would also protect them from radiation, she said.
Previous attempts to build safe biovaults have met with mixed success. The Svalbard Global Seed Vault in Norway is located in the Arctic and was built to be permanently kept at or below -18 degrees Celsius by the surrounding permafrost, but climate change and rising temperatures threaten its long-term safety.
Biorepository facilities in other parts of the world, especially those located close to cities, are human-power dependent and vulnerable to geopolitical upheaval.
Andrew Pask David B. Schneider, a researcher at the University of Melbourne in Australia who is building an Australian seed repository, is enthusiastic about the idea: “We want to look at the same samples in the same facility to ensure their safety, and at the moment the Moon seems like the safest place,” he says.
but Rachel Lapin A researcher from Monash University in Melbourne says there are many challenges and disadvantages to using the Moon, especially the difficulty of accessing it to add or remove samples. She says it might be better to store samples on Earth with lots of redundancy, so that if one repository fails, others are available.
“I want to see compelling evidence that storage will be available if needed,” she said.
Even if this moon vault is not used, Alice Gorman Researchers at Flinders University in Adelaide, Australia, see value in preserving human remains in space, and believe they might one day be accessible to extraterrestrial civilizations.
“Whether it’s cryogenically frozen biological tissue or DNA, or the full text of Wikipedia stored on a high-density nickel disk, the repository will be similar to the Voyager Golden Records,” Gorman says, referring to the metal disks containing humanity’s story attached to the spacecraft currently leaving the solar system.
A base below the surface of the moon may be needed to protect moon residents from radiation.
Shutterstock/Shiva Shankara
To protect astronauts on the Moon from harmful radiation, a long-term lunar base would need to be protected by 2-3 metres of regolith – the layer of rock and dust on the Moon’s surface.
Guo Jingnan and Mikhail Dbinde Researchers at the Hefei University of Science and Technology in China analyzed how the thickness of shielding for a lunar base would affect radiation doses for people living on the Moon. Their study included using lunar soil as shielding as well as additional artificial shielding.
According to Guo, there are two main types of radiation that are dangerous to astronauts: the ubiquitous background levels of galactic cosmic rays, which pose a long-term cancer risk, and solar energetic particles (SEPs) from sporadic solar activity. These SEPs can cause more serious symptoms of radiation exposure, such as skin damage and damage to bone marrow and lymphatic tissue, which are involved in the production of blood cells and platelets. In severe cases, exposure to SEPs can lead to death.
“The amount of radiation on the lunar surface is not constant,” Guo said. “For a short lunar stay that does not encounter a strong SEP, the radiation impact should be small.”
But if a solar explosion were to occur, the danger could be enormous. For example, at the end of the Apollo program, Apollo 16 landed astronauts on the Moon for a few days in April 1972. It was followed by Apollo 17 in December of the same year. During that time, there was a massive radiation storm.
“A very large SEP event could have occurred during September, potentially killing any unprotected astronauts on the lunar surface,” Guo said.
The study also found that too little regolith shielding could be worse than no shielding at all, because lunar soil scatters radiation and produces various types of secondary particles, including neutrons. This secondary radiation peaks about 50 centimetres deep on the lunar surface but drops off rapidly beyond that.
“Neutrons have a large biological impact because they interact efficiently with the human body and induce radiation effects in internal organs,” Guo said. “With about 50 centimeters of shielding, neutrons can account for more than 90 percent of the total effective radiation dose.”
The study found that a three-metre deep base could safely house the same crew for more than 20 years without exceeding lifetime and annual radiation limits set by the space agency.
Guo says two metres of shielding would be enough for a single crew member to stay on the moon for no more than a few months, and that crew members could return to Earth frequently enough to avoid exceeding lifetime and annual radiation health limits, she says.
The most practical way to reduce radiation exposure would be to give the base natural shielding, by building it in an existing cave or lava tube, or by constructing habitats below the surface, Guo said.
Better prediction of solar storms is also important to keep astronauts safe when they leave base and conduct surface activities, she said.
Titan’s north polar region, imaged using Cassini’s radar signature, shows blue hydrocarbon oceans.
NASA / JPL-Caltech / Italian Space Agency / USGS
The most detailed look yet at Saturn’s moon Titan’s strange lakes has revealed a diverse marine landscape similar to Earth’s, with a mix of freshwater rivers and saltwater oceans.
Unlike Earth’s watery oceans, Titan’s lakes are composed of methane and ethane, which are liquid at the planet’s average surface temperature, about −179 °C (−290 °F).
Radar measurements from NASA’s Cassini spacecraft, which orbited Saturn from 2004 to 2017, suggested differences in the lakes’ properties, including their composition and surface waves, but the signals didn’t contain enough information to distinguish between them.
now, Valerio Poggiali Poggiali and his colleagues at Cornell University in New York used a different radar technique to map the composition and surface of Titan’s oceans, revealing that the amount of ethane increases as you move south across the planet from the north pole. “The further north you go, the cleaner and purer the oceans become. They’re dominated by methane,” Poggiali says.
Previous radar measurements were made using signals sent and received at the same location on the Cassini spacecraft, which meant the reflected radio waves were polarized in one direction, or twisted.
The new study analyzed signals from Cassini’s radar that were reflected off the lake’s surface and picked up by NASA’s Deep Space Network, a radio antenna on Earth. The shallow angle of the reflected signal meant it contained two different polarized waves, giving Poggiali and his colleagues more information about the lake’s properties.
They found that many of the rivers and estuaries that feed the lake have rough surfaces caused by wind-driven waves, which could be a sign of active tides and currents feeding into the lake, Poggiali said. “Surface activity is very important if we want to plan future missions like a Titan submarine, but also to better understand Titan’s environment in terms of wind and atmospheric properties.”
Poggiali and his colleagues also found that the methane content was higher before the river flowed into the lake, which could help trace the methane and ethane cycle on Titan, Poggiali says. Ingo Muller-Wodarg “On Earth, when rivers flow into large, salty oceans, we find that the water becomes less saline near where the river flows in,” say researchers from Imperial College London. “Something similar is happening here, but it’s not the salinity that’s the problem, it’s the relative proportions of methane and ethane.”
Caves on the moon have been identified by scientists not too far from where Neil Armstrong and Buzz Aldrin landed 55 years ago. They speculate that there could be hundreds more caves that could be suitable for future astronauts to inhabit.
A team of researchers led by Italians reported on Monday that they have evidence of a large cavern accessible through the deepest hole on the moon’s surface. This cavern is situated in Mare Tranquility, just 250 miles (400 kilometers) from the Apollo 11 landing site.
The hole, like over 200 others found in that area, was created by the collapse of a lava tube.
The researchers examined radar measurements from NASA’s lunar rover and compared their findings to lava tubes on Earth. Their findings were published in the journal Nature Astronomy.
Scientists state that the radar data has only uncovered the initial section of the underground chamber, which they estimate to be at least 130 feet (40 meters) wide and potentially even longer.
Leonardo Carrell and Lorenzo Bruzzone from the University of Trento expressed their excitement in an email saying, “The lunar caves have remained a mystery for more than 50 years, so it’s exciting to finally be able to prove their existence.”
Most of the holes on the moon seem to be situated in the ancient lava plains, and there might also be caves at the moon’s south pole, where NASA intends to send astronauts in 10 years. A crater in perpetual shadow there is believed to contain frozen water that could be used for drinking or as rocket fuel.
NASA’s Apollo program successfully landed 12 astronauts on the moon, starting with Armstrong and Aldrin on July 20, 1969.
These findings suggest that the Moon could have numerous caves and lava tubes, providing natural shelter for astronauts and shielding them from cosmic rays, solar radiation, and micrometeorite impacts. Constructing habitats from scratch would be more time-consuming and challenging, even if cave walls need reinforcement to prevent collapse.
The rocks and other materials in these caves, unaffected by the harsh surface conditions for hundreds of millions of years, could also help scientists gain a better understanding of how the Moon evolved, especially in terms of its volcanic activity.
Proposed underground geometry of the Mare Tranquillitatis on the Moon
Wagner and Robinson
A network of caves may be hidden just beneath the Moon's surface, and researchers may have finally discovered an access point. These caves have long been predicted, but until now it has been difficult to prove their existence or find a way to directly explore them with future missions.
The Moon's surface is dotted with holes, or so-called skylights, which are openings in the ceilings of caves that are thought to have been formed by the collapse of ancient lava tubes – tunnels formed when lava flows beneath the solid crust. Leonardo Carrell Researchers from the University of Trento in Italy have discovered that the deepest part of these formations, the “The Pit of the Sea of TranquilityThese images were taken by NASA's Lunar Rover in 2010.
By comparing their simulations with lava tubes on Earth, the researchers found that the Mare Tranquillitatis hole appears to open into a large cavern buried at least 400 feet (130 meters) underground. The cave appears to be about 150 feet (45 meters) wide and at least 100 feet (30 meters) long, but could be much larger.
Caves like these could offer a unique window into the evolution of the Moon, says Carell. “Analyzing rocks from lunar caves, which have not been altered by the harsh lunar environment, could provide important insights into key scientific questions, such as the timeline and duration of volcanic activity on the Moon and the actual composition of the Moon's mantle,” Carell says.
The same stone ceiling that protects the cave rocks from the intense radiation experienced on the surface could also provide valuable shielding for future human explorers on the Moon. “Unlike the surface of the Moon, where temperatures change dramatically between day and night, [the caves] “It has a stable internal temperature, and it's also a natural shield against radiation and impacts,” Carrell says.
The idea of using natural caves like these as lunar base camps has long been popular, and future astronauts may one day call the Sea of Tranquility home.
Ever wondered if any moons in the solar system have a dense atmosphere like Earth? Currently, scientists believe that Saturn’s moon Titan is the only one with such an atmosphere. Despite being 2.5 times smaller than Earth, Titan has an atmospheric pressure 1.5 times greater than Earth’s. Studies of Titan’s atmosphere from outside the solar system have shown that it consists of around 94% nitrogen, 6% methane, 0.1% hydrogen, and small amounts of complex organic molecules. The Huygens mission data provides more insight into this.
Initially, scientists thought that Titan’s haze formed through the breakdown and recombination of nitrogen and methane by sunlight. However, this explanation couldn’t account for the presence of complex organic molecules which require high temperatures to form. Recent research suggests that these molecules may have originated during a meteorite impact event in Titan’s atmosphere, particularly due to the proximity of Titan to Saturn’s E ring which disperses organic material from moons like Enceladus.
To test this new theory, researchers at Princeton University created a model to predict the formation of molecules during meteorite impacts in Titan’s atmosphere. By combining data from observations of Saturn’s rings and Titan’s atmospheric chemistry from the Huygens probe, they estimated the types of organic molecules that could result from these impacts. They found that only meteorites larger than 0.02 grams could trigger such events in Titan’s atmosphere, with material mostly originating from atolls surrounding the solar system.
The team also identified a hot zone known as the “Cylindrical shock wave” around the falling meteorite, reaching temperatures of 10,000 K. This wave could facilitate the synthesis of complex organic molecules at lower temperatures in the region surrounding the impact. Meteorites falling from Enceladus are suggested to contribute significantly to Titan’s organic-rich haze layer, particularly at altitudes where shock waves are most efficient in synthesizing organic molecules.
The researchers proposed that observations from future missions, such as Dragonfly, could further validate their models by studying the frequency of medium-sized meteorite impacts on Titan. These observations could provide more insights into the formation of Titan’s unique atmosphere and iconic haze layer.
Have you ever looked up at Earth’s Moon and wondered where it came from? Most scientists agree that a small planet called Theia collided with the young Earth 4.5 billion years ago. Most of the debris from this giant impact coalesced to become the Moon we see today. But where did the rest of Theia go? Qian Yuan and his colleagues hypothesize that Earth absorbed parts of Theia during the impact, and that these remnants of Theia remain deep inside Earth to this day.
Scientists believe that waves called mechanical energy waves Seismic wavesAs it passes through certain zones inside the Earth, its speed slows down. Large slow states Previous researchers have suggested that these zones are graveyards of ancient ocean floors that sunk into the Earth’s interior during plate tectonics, but Yuan’s team proposes that these zones could be the remains of Theia.
The research team found that the LLVP contains gases such as hydrogen, carbon dioxide, and nitrogen. Volatile substancesVolatiles are most likely present during the formation of solar systems and planets, when material floating in space begins to accumulate. Because volatiles are light, they can escape into space if they get the chance. When Earth and Theia collided, volatiles from both planets were caught up in the collision. Scientists believe that most of the volatiles escaped into space, but Yuan and his colleagues suggested that some of Theia may have captured these volatiles and sunk deep inside the Earth, forming the LLVP.
To test whether the LLVP is a remnant of Theia, the researchers used a computer model designed to test how different types of solid matter interact with each other. Thermal evolution modelHe explained that other researchers have shown that Theia is made of a much denser material than Earth, so they wanted to test whether Theia’s denser material would mix completely with Earth’s or remain separate.
The researchers used a thermal evolution model to randomly scatter chunks of Theia-like material throughout a mass of Earth-like material and calculate how well they would mix. They ran eight models with chunks of different sizes, densities, and temperatures. In almost all of these models, they found that Theia’s material sank deep into the Earth and coalesced into LLVP-like mountains without mixing with Earth’s material.
The researchers performed seven giant impact simulations to further explore how Theia interacted with the young Earth. They used these simulations to collide Theia with Earth and calculate how that impact would have affected the Earth’s interior. These simulations found that after the collision with Theia, denser, more solid material sank toward the center, while less dense material stayed toward the surface, resulting in a layered Earth’s interior. The researchers explain that these simulations also suggest that denser material from Theia sunk deep inside the Earth without mixing.
The researchers concluded that Theia’s remains may have sunk to Earth and coalesced into a region similar to the LLVP, where it remained for the next 4.5 billion years. They further proposed that if Theia’s material was preserved inside the Earth for billions of years, the composition of the Earth’s interior could have changed.
They suggested that future researchers test their hypothesis by comparing the composition of the LLVP with basalts found on the Moon to see if it matches up. They also suggested that researchers use newer, more accurate models of Earth’s thermal evolution to further explore how Theia’s impact with Earth may have affected the evolution of Earth’s interior and the formation of the LLVP.
These bright (hot) “heat rings” are a common phenomenon and indicate active lava lakes. Jupiter Infrared Auroral Mapper (JIRAM) instrument aboard NASA’s Juno spacecraft.
Visible, infrared and temperature maps of Loki Patera and Dazhbog Patera. Image courtesy of Mura others., doi: 10.1038/s43247-024-01486-5.
Io is the innermost of Jupiter’s four Galilean moons and the fourth largest moon in the solar system.
Apart from Earth, it is the only known place in the solar system with volcanoes that spew hot lava like Earth’s.
Io has over 400 active volcanoes, which are caused by tidal heating due to gravity from Jupiter and the other Jovian moons.
There are many theories about the types of volcanic eruptions on the Moon, but little data to support them.
NASA’s Juno spacecraft will pass by Io in May and October 2023, coming within about 35,000 km (21,700 miles) and 13,000 km (8,100 miles), respectively.
Among Juno’s observational instruments giving a closer look at the fascinating moon was JIRAM.
JIRAM is designed to capture infrared light emitted from deep within Jupiter, studying the weather layer 50 to 70 km (30 to 45 miles) below Jupiter’s cloud tops.
However, during Juno’s long mission, the mission team also used the instrument to study moons such as Io, Europa, Ganymede, and Callisto.
JIRAM images of Io showed the presence of bright rings surrounding the base of many hotspots.
“The high spatial resolution of JIRAM’s infrared images, combined with Juno’s favorable position during the flyby, revealed that Io’s entire surface is covered by lava lakes in caldera-like formations,” said Dr Alessandro Mura, a researcher at the National Institute for Astrophysics in Rome and Juno co-investigator.
“In the area of Io’s surface where we have the most complete data, we estimate that about 3% of it is covered by one of these lava lakes. Calderas are large depressions that form when volcanoes erupt and collapse.”
This image taken by NASA’s Galileo spacecraft shows volcanic eruptions on Io. Image credit: NASA/JPL/University of Arizona.
JIRAM’s flyby data will not only reveal Io’s rich lava reserves, but also provide a glimpse into what’s going on beneath the surface.
Infrared images of some of Io’s lava lakes show a thin circular layer of lava at the boundary between the central crust that covers most of the lake and the lake walls.
The lack of lava flows above or beyond the lake’s edge suggests melt circulation, demonstrating a balance between the melt erupted into the lava lake and that circulated back into the subsurface system.
“We now know what the most frequent volcanic activity on Io is: huge lava lakes with magma rising and falling,” Dr Mura said.
“The lava crust collapses against the lake wall, forming the typical lava rings seen in Hawaiian lava lakes.”
“The walls are thought to be hundreds of metres high, which explains why magma is not typically observed spilling out of pateras – bowl-shaped formations formed by volcanic activity – and moving across the lunar surface.”
JIRAM data suggests that the surfaces of these Io hotspots consist largely of a rocky crust that periodically moves up and down as one continuous surface due to central upwelling of magma.
In this hypothesis, friction between the crust and the lake wall would prevent it from sliding, causing it to deform and eventually break away, exposing the lava just below the surface.
Another hypothesis, which remains valid, is that magma wells up in the middle of the lake, spreading out and forming a crust that sinks along the lake’s edge, exposing the lava.
“We’re just beginning to look at the results from JIRAM’s approach to Io in December 2023 and February 2024,” said Juno principal investigator Dr. Scott Bolton from the Southwest Research Institute.
“These observations reveal fascinating new information about Io’s volcanic activity.”
“When we combine these new results with Juno’s long-term campaign to monitor and map Io’s never-before-seen north and south pole volcanoes, JIRAM is poised to become one of the most valuable tools for learning about the workings of this tormented world.”
Stonehenge, an ancient prehistoric temple in southern England, remains a fascinating mystery. Construction began around 5,000 years ago, but the purpose of this enigmatic site remains unknown as its builders left no written records.
Analysis has shown that the massive stones of Stonehenge were transported from distant quarries, some weighing over 20 tonnes.
The alignment of Stonehenge with the sun during the solstices is well-documented, but its potential connection with the moon has intrigued experts. Scholars are exploring whether Stonehenge was not only designed to align with the sun but also with the moon, a remarkable achievement for a society predating the invention of the wheel.
On June 21, 2024, experts are investigating the relationship between Stonehenge and the lunar cycles as a rare lunar standstill event unfolds.
Professor Michael Parker Pearson, a renowned expert in British prehistory, speculates that Stonehenge’s builders may have aimed to unify people, ancestors, land, and the cosmos by linking the movements of the sun and moon.
The lunar standstill, occurring once every 18.6 years, results in the moon reaching its most extreme northern and southern positions in the night sky. This phenomenon, unlike the annual solstices tied to the sun, creates a unique celestial display.
While Stonehenge’s alignment with the solstices is well-known, its relationship with the lunar cycles remains less understood. Research indicates that burials at Stonehenge predate the arrival of the large stones, and possible alignments suggest a connection with the lunar standstill phenomenon.
An ongoing study by experts from Oxford, Leicester, and Bournemouth universities aims to delve into the significance of the moon in Stonehenge’s construction, potentially reshaping our understanding of this ancient monument.
Experts like Professor Parker Pearson, Professor Ruggles, and Dr. Chadburn are at the forefront of unraveling the mysteries of Stonehenge and its celestial connections.
The Chang’e-6 probe is recovered in Xiziwang Banner, Inner Mongolia, China.
Xinhua/Shutterstock
China’s Chang’e-6 spacecraft has returned to Earth, bringing back the first chunk of space rock from the far side of the moon.
The capsule separated from the orbital container at around 1:20 p.m. local time, 5,000 kilometers above the Atlantic Ocean, and landed in Xiziwang Banner, Inner Mongolia Autonomous Region, China on June 25.
The sample, which should contain about 2 kilograms of lunar material, descended the final 10 kilometres by parachute, landing at 2:07pm and being retrieved by scientists from the China National Space Administration.
Landing on the far side of the moon is difficult because it always faces away from Earth and there is no direct communication line, and this area’s surface remained unexplored until a Chinese spacecraft landed there earlier this month.
The landing and recovery operations relied heavily on autonomous processes and robotic tools, but Chinese engineers were able to send messages to the spacecraft through the Queqiao-2 relay satellite, which was launched in March this year and is still orbiting the moon.
The samples include surface and two meters of material scooped up by Chang’e-6 drilling into its landing site in Apollo Crater, which is within the larger South Pole-Aitken Basin. Scientists hope that this material will help explain how and when these basins formed, and may enable understanding of the origins of other similar lunar craters.
The rocks may indicate the amount of water ice in the region, which could be a key resource for a manned mission that China hopes to send to the moon by 2030.
Before embarking on its crewed mission, China plans to send two more spacecraft, Chang’e-7 and Chang’e-8, to the lunar south pole to gather information on a potential site for a base to be called the International Lunar Research Station. China is leading the mission in collaboration with Russian space agency Roscosmos.
The Moon, Earth’s steadfast companion that remains in orbit, has been a popular subject of discussion since the early days of space exploration. Missions have been planned, rovers have explored its surface, and even a flag has been planted there.
But why all the interest? The Moon is over 400,000 km away from Earth, a considerable distance to travel, and it poses many challenges as a potential habitat for humans, such as exposure to solar radiation.
However, the Moon offers other advantages. Being largely untouched, it presents opportunities for planetary research, scientific experiments, and notably, mining for valuable resources.
There is a growing interest in lunar exploration, raising the important question of lunar ownership. Philosopher and author AC Grayling addresses this topic in his new book, “Who owns the moon?”
SF: Why are we interested in going to the moon, and will it ever happen?
ACG: The Moon holds vast resources, making it a lucrative target for mining operations. Coupled with the rapid pace of technological advancements, the obstacles to lunar exploration are likely to be overcome. Significant investments are being made in this endeavor, indicating the potential benefits that could be derived.
While some argue that lunar exploration is not feasible, the lure of valuable resources like Helium-3 for clean nuclear fusion makes the Moon an attractive destination for mining activities.
SF: So who actually owns the moon?
The 1967 Outer Space Treaty, agreed upon by the United Nations, asserts that the Moon cannot be militarized or claimed for sovereignty or ownership. It is considered a shared resource belonging to all of humanity.
With various nations eyeing lunar exploration and exploitation, concerns about potential conflicts arise, highlighting the need for clearer regulations and agreements.
What are the next steps? Will the law be strengthened?
Efforts are being made to establish binding regulations, but the presence of multiple space agencies and rivalries between nations complicate the process. Initiatives like the Artemis Accords aim to set guidelines for responsible behavior in space.
However, the prospect of a new space race between major powers like the US, China, and Russia raises concerns about the potential for conflict and competition in space.
Can history give us any indication of what might happen?
The Antarctic Treaty serves as a model for international cooperation in preserving shared resources. However, challenges to extend the treaty’s scope and conflicting claims in Antarctica hint at the complexities of managing common territories.
Similar issues could arise in lunar exploration, especially with the potential for valuable mineral resources like Helium-3. The absence of clear regulations and the lack of a universal agreement on space governance present significant hurdles.
Is there an argument to leave the moon alone?
Given the Moon’s vast and barren nature, concerns about environmental impacts are minimal compared to Earth. Utilizing lunar resources for space exploration and sustainable practices could be more beneficial in the long run.
What’s the next step after the moon?
The Moon’s potential as a refueling station for Mars missions opens up new possibilities for further space exploration. As colonies on celestial bodies evolve, questions of independence and governance will arise, shaping the future of human presence in space.
In conclusion, the direction of space activities will determine whether they align with values upheld on Earth or devolve into profit-driven ventures. Clear regulations and international cooperation are essential to ensure a sustainable and equitable future in space.
About our expert, A.C. Grayling
AC Grayling is a philosopher and author of the book “Whose Moon is It?” He is also the founder of the New College of the Humanities and a respected figure in literary criticism and intellectual discourse.
The Moon, Earth’s loyal companion that remains steadfast in its orbit around our planet, has been a topic of fascination and exploration ever since the early days of space travel. Missions have been planned, rovers have traversed its surface, and even a flag has been planted on its barren landscape.
But what is the appeal of the Moon? Situated about 400,000 km away from Earth, it poses numerous challenges for human habitation, such as high levels of solar radiation. However, the Moon offers a unique opportunity for planetary research, scientific experiments, and potentially lucrative mining ventures due to its untapped resources.
With the allure of untapped resources comes a race to be the first to claim ownership of the Moon. This begs the question: Who does the Moon truly belong to? Philosopher and author AC Grayling explores this complex issue in his latest book, Who owns the moon?
SF: Why the interest in the Moon, and will we ever reach it?
ACG: The Moon holds vast potential for mining operations as it is rich in resources, presenting a more feasible option compared to Earth. Despite logistical challenges, rapid technological advancements and substantial investments indicate that lunar exploration is imminent.
Some argue that a robotic base alone may not suffice for the extraction of valuable resources like Helium-3, crucial for clean nuclear fusion. The lure of economic gains raises concerns about potential conflicts over lunar territory.
SF: So, who lays claim to the Moon?
The 1967 Outer Space Treaty, ratified by the United Nations, prohibits militarization and territorial ownership of the Moon, declaring it a common heritage of mankind. This ambiguity has spurred competition among nations to pioneer lunar technologies.
Efforts to establish guidelines were made in 1979, yet the absence of binding agreements leaves room for potential disputes over lunar resources, particularly valuable elements like Helium-3. The lack of a regulatory framework raises concerns about future conflicts, extending beyond Earth.
Credit: Gremlin
What’s next, and will legal frameworks evolve?
The need for stringent regulations is apparent, given the burgeoning interest in lunar exploration by various space agencies. Proposals for lunar space stations and the Artemis Accords, a collaborative effort among nations for responsible space conduct, hint at evolving norms to govern lunar activities.
Historically, the 1961 Antarctic Treaty provides a model for international cooperation in preserving a common resource. However, challenges arise as countries like China and Russia seek to assert territorial claims in Antarctica, signaling potential conflicts over resource exploitation.
The Moon’s status as a shared resource prompts calls for inclusive lunar laws and international treaties to ensure equitable benefits. Efforts to establish regulatory frameworks face obstacles, mirroring past struggles in maritime law and resource management.
Is there a case for leaving the Moon untouched?
The Moon’s vast expanse and desolate nature diminish concerns over environmental impact, distinguishing it from Earth. Despite existing space debris, the Moon’s remote location offers ample space for exploration and development.
What lies beyond the Moon?
Envisioning a future where lunar infrastructure facilitates Mars exploration through water extraction for fuel production, heralds a new era of space colonization. Echoing historical precedents, colonies in space may strive for autonomy, shaping interplanetary relations akin to terrestrial geopolitics.
As humanity embarks on extraterrestrial endeavors, adherence to ethical principles and equitable resource-sharing remains pivotal for a sustainable cosmic future.
This conversation has been edited for length and clarity.
About our expert, A.C. Grayling
AC Grayling, a distinguished philosopher and author, sheds light on lunar ownership in his book “Whose Moon is It?” He is also the founder of the New College of the Humanities, recognized for his contributions to literary criticism and philosophical discourse.
NASA/JPL-Caltech/University of Arizona/University of Idaho
Saturn's largest moon, Titan, has rocky coastlines around its methane seas and lakes that appear to have been carved out by waves, and a NASA mission launching in 2028 may be able to get a closer look.
Titan is the only body in the solar system other than Earth that has liquid on its surface. It has lakes and oceans made of hydrocarbons such as liquid methane, ethane, and other organic molecules. Scientists think that winds in Titan's thick, nitrogen-rich atmosphere drive the waves in these lakes, but this has never been observed directly because Titan's atmosphere is too hazy to see through.
now, Rose Palermo Researchers from the U.S. Geological Survey in Florida and their colleagues found that the shape of Titan's coastline is best explained by the presence of waves that have eroded the ocean surface over eons.
Palermo and his team looked at the shorelines around Titan's largest oceans and lakes, including Kraken Mare and Ligeia Mare, and compared them to coastlines on Earth with known origins, such as Lake Rotoef in New Zealand, which initially formed by floods and later was eroded by waves. The team then created different simulations of Titan's oceans, including those in which the shores were eroded by waves or by dissolving their edges.
Photographed by NASA's Cassini spacecraft, Ligeia Mare on Saturn's moon Titan has a variety of edges that appear to have been carved by waves.
NASA/JPL-Caltech/ASI/Cornell
The researchers found that images of Titan's coastline, best depicted by wave simulations, resemble Earth's wave-eroded coastlines.
“It's still tentative, but I'm very excited about it.” Ingo Muller-Vodarg The Imperial College London researchers say that although the study did not observe waves themselves, it is very strong evidence that waves exist. Dune-like structures.
The only way to truly verify that waves exist is to send a spacecraft to the surface, like NASA's Dragonfly drone mission, scheduled to launch in 2028, Mueller-Vaudergues said.
Studying Titan's coastlines may also help us understand how the first coasts on Earth formed, Palermo says: “Titan is a unique laboratory for studying coastal processes because it is not influenced by humans or plants. It's a place where we can study coasts only as physical processes.”
how to use SHARK-VIS device Using the Large Binocular Telescope on Mount Graham in Arizona, US, astronomers have captured the highest-resolution optical images of Io ever taken by a ground-based telescope. The new images allow the astronomers to confirm that large-scale surface changes are occurring around Pele, one of Io's most well-known volcanoes.
Taken with the SHARK-VIS camera on the Large Binocular Telescope on January 10, 2024, this image is the highest resolution image of Io ever taken by an Earth-based telescope. The image combines three spectral bands: infrared, red, and green to highlight the reddish ring around Pele volcano (below and to the right of the Moon's center) and the white ring around Piran Patera to the right of Pele. Image credit: INAF / Large Binocular Telescope Observatory / Georgia State University / SHARK-VIS@LBT / PIF Pedichini / D. Hope / S. Jefferies / G. Li Causi.
Io is slightly larger than Earth's Moon and is the most volcanically active body in the solar system.
It is the innermost of Jupiter's Galilean moons, which besides Io include Europa, Ganymede and Callisto.
Io is caught in a gravitational tug-of-war between Jupiter, Europa, and Ganymede, and is constantly compressed, causing frictional heat to build up inside it, which is thought to be the cause of sustained and widespread volcanic activity.
By monitoring Io's surface eruptions, planetary scientists hope to gain insight into the thermal movement of material beneath the moon's surface, its internal structure, and ultimately the mechanisms of tidal heating that drive Io's intense volcanic activity.
Io's volcanic activity was first discovered in 1979, when Linda Morabito, an engineer for NASA's Voyager missions, spotted plumes of smoke in one of the images the spacecraft took during its famous Grand Tour of the outer planets.
Since then, countless observations have been made, both from space and from telescopes on Earth, documenting Io's restless nature.
“Io offers a unique opportunity to learn about the powerful eruptions that contributed to shaping the surfaces of the Earth and Moon long ago,” said Dr Al Conrad, an astronomer at the Large Binocular Telescope Observatory.
The new images, taken with the large binocular telescope SHARK-VIS, are so detailed that they enabled the team to identify a major resurfacing event in which the plume deposits around a prominent volcano known as Pele, located near the equator in Io's southern hemisphere, have been covered by eruption deposits from a neighboring volcano, Piran Patera.
A similar series of eruptions was observed by NASA's Galileo spacecraft, which explored the Jovian system from 1995 to 2003.
“We interpret this change as dark lava deposits and white sulfur dioxide deposits from the Piran Patera eruption partially covering Pele's red sulfur-rich plume deposits,” said Dr. Ashley Davis, principal scientist at NASA's Jet Propulsion Laboratory.
“Before SHARK-VIS, it was impossible to observe these resurfacing events from Earth.”
“The visible light images are absolutely stunning,” said Imke de Patter, a professor at the University of California, Berkeley.
“Pele appears to be erupting continuously, spewing plumes of volcanic gases about 300 kilometers above Io's surface, high enough to have been photographed by Voyager, Galileo and Hubble.”
“Gases in the plume erupting from the lava lake freeze and are deposited on the surface as a conspicuous, wide, reddish, sulfur-rich ring.”
“Piran Patera, on the other hand, appears to erupt intermittently, leaving lava surrounded by a white ring of frozen sulfur dioxide.”
“The new images show that the white sediments obscure Pele's reddish sediments, but perhaps only for a short time.”
“Images of Io taken by NASA's Juno spacecraft in April 2024 will show a nearly perfect orange ring, with perhaps a faint hint of red where the Piran deposits were located.”
“It's like a race between Piram and Pele to see how much and how fast each can deposit.”
“Once Piran stops completely, it will be covered again with Pele's red deposits.”
Illustration of the Chang’e 6 spacecraft landing on the moon
Source: cnsa.gov.cn
China’s Chang’e-6 spacecraft has successfully landed on the far side of the moon and has begun taking lunar rock samples from that area for the first time.
After orbiting the Moon for three weeks, the probe landed on a relatively flat area of Apollo Crater within the South Pole-Aitken impact basin at 6:23 a.m. Beijing time on June 2.
The landing sequence was largely autonomous, as the far side of the moon has no direct communications link with Earth, but engineers were able to monitor the situation and send instructions using the Queqiao-2 relay satellite, which was launched in March this year and is currently in lunar orbit.
Footage from the spacecraft’s camera as it approaches the landing site
Source: cnsa.gov.cn
Once the lander and its attached ascent module separated from the orbital portion of the spacecraft, its engines began a controlled descent, using obstacle avoidance systems and cameras to detect rocks and stones and select a smooth landing area. About 100 meters above the lunar surface, laser scanners selected the final location, after which the engines were shut down and the craft made a cushioned landing.
The lander is currently collecting samples, using a robotic scoop to collect surface material and a drill to extract rocks from about two metres underground, in a process that will take 14 hours over two days, according to the China National Space Administration.
The collected samples will be loaded onto an ascent vehicle and sent through the lunar exosphere to the orbiter module, which will then return to Earth and release the sample-laden re-entry capsule on June 25, which will land at Siziwang Banner in Inner Mongolia.
Sulfur and chlorine isotopes in Io’s atmosphere indicate that Io has been volcanically active throughout the solar system’s 4.57 billion-year history.
This global map of Io was obtained in January 1999 by NASA’s Galileo spacecraft. Image credit: NASA/JPL/University of Arizona.
Jupiter’s moon Io is the most volcanically active body in the solar system.
Io’s volcanic activity is the result of tidal heating due to friction that occurs within the moon’s interior as it is pulled between Jupiter and its neighboring moons Europa and Ganymede.
However, it is not fully understood how long this moon has hosted such extensive volcanic activity.
Due to the Moon’s current level of volcanic activity, Io’s surface is constantly being reworked, leaving only the most recent 1 million years of its geological record.
Stable isotope measurements of volatile elements in Io’s atmosphere could provide information about Io’s volcanic history.
“Io is a moon of Jupiter and is the most volcanically active body in the solar system,” says Dr. Ellie Hughes, a volcanic fluid geochemist at GNS Science.
“Io is in orbital resonance with Jupiter’s other two large moons, Europa and Ganymede.”
“For every time Ganymede orbits Jupiter once, Europa orbits twice and Io orbits four times.”
“This configuration causes Io’s orbit around Jupiter to be elliptical rather than circular, causing Jupiter’s gravity on Io to change periodically.”
“This change in gravity causes something called tidal heating on Io, just as the moon causes ocean tides on Earth, which causes volcanic activity.”
“However, it is unclear whether volcanic activity has occurred on Io over a long period of time or how this activity has changed over Io’s 4.57 billion year history.”
“Io has experienced so much volcanic activity that its surface is constantly being updated, leaving little trace of its past.”
“Fortunately, we can study Io back in time by studying sulfur and its isotopes.”
In the new study, Hughes, Caltech researcher Catherine de Clare, and colleagues used the Atacama Large Millimeter/Submillimeter Array (ALMA) to observe gases in Io’s tenuous atmosphere. , we measured stable isotope radio waves of sulfur and chlorine. Carries molecules.
Scientists believe that both elements have lower concentrations of heavier isotopes compared to the solar system average due to the loss of lighter isotopes from the upper atmosphere as material is continually recycled between Io’s interior and atmosphere. I discovered that it is very plentiful.
The findings show that Io lost 94% to 99% of its sulfur through this outgassing and recycling process.
This would require that Io maintained its current level of volcanic activity throughout its lifetime.
“Sulfur is released into the atmosphere from Io’s interior by tidal heating from volcanic activity,” Hughes said.
“Some of the sulfur is lost to space by Jupiter’s magnetosphere, a bundle of charged particles swirling around Jupiter that continuously bombards Io’s atmosphere.”
“The sulfur that is left behind will eventually be buried back inside Io, ready to start the cycle again.”
“Isotopes of the same element have different weights from each other, so they can behave slightly differently during this cycle.”
“We found that the sulfur lost to space on Io is a little lighter isotopically than the sulfur that is recycled into Io’s interior.”
“Thus, over time, the sulfur left on Io becomes isotopically heavier and heavier. How heavy it gets depends on how long the volcanic activity has been occurring.”
“We found much more isotopically heavy sulfur in Io’s atmosphere than the solar system average. This requires that Io has lost almost all of its original sulfur.”
“Based on numerical modeling, this means that Io has been volcanically active for billions of years, and that tidal heating and orbital resonance have also occurred for most of Io’s history.”
“In the future, variability in atmospheric sulfur isotopic composition may help quantify Io’s average tidal heating rate.”
There is a new space race underway, with missions to the moon increasing at a significant pace. Recently, a spacecraft built by Intuitive Machines became the first U.S. mission to land on the moon since 1972’s Apollo mission.
China is preparing to launch Chang’e 6, furthering their lunar exploration program with plans to bring back lunar rocks from the far side of the moon. A NASA study suggests that 22 international missions could reach the moon by the end of 2026, potentially leading to astronauts leaving footprints on the moon once again.
Despite the exciting progress, researchers like Dr. Alanna Krolikowski and martin elvis warn of dangers overlooked in the rush of exploration. They emphasize the need to protect Sites of Extremely Scientific Significance (SESI) on the moon, similar to protecting special sites on Earth.
Krolikowski stresses the urgency of implementing SESI protections to avoid irreversible harm to these important areas. Two key locations on the moon, its backside shielded from Earth’s radio noise and its poles with valuable volatiles like water ice, require preservation for scientific research and exploration.
“The problem is urgent,” says Krolikowski. “We are facing a rapidly closing window in which SESI protections can be implemented to avoid the worst possible irreversible harm.”
Special attention is drawn to the moon’s poles with areas of eternal darkness that trap important volatiles. These regions hold valuable information about the history of the solar system, particularly in studying the early universe.
Researchers advocate for careful management of activities on the moon to avoid contaminating these special areas and preserving their natural state for exploration.
Proposals for protecting lunar SESIs include identifying and characterizing these areas, establishing rules in national and international space policies, and initiating negotiations under the United Nations for effective international cooperation.
Despite the challenges, experts like Krolikowski, Elvis, and Crawford stress the importance of getting it right to preserve the moon’s unique habitats and secrets. With increasing lunar activities, taking action now is crucial.
About our experts
Dr. Alanna Krolikowski is an assistant professor of political science at the Missouri Institute of Technology, specializing in space policy research published in academic journals like space policy and global policy.
martin elvis is an astronomer at the Harvard-Smithsonian Center for Astrophysics focusing on space economics, law, and ethics, with research published in Nature and other journals.
Professor Ian Crawford is a planetary scientist at Birkbeck University, known for his lunar science and exploration research published in various scientific journals.
The White House requested NASA to establish a standard time for the moon and other celestial bodies, as the U.S. seeks to lead in space standards amidst growing competition for lunar resources among nations and private entities. The directive was issued by the director of the White House Office of Science and Technology Policy (OSTP).
NASA has been tasked with collaborating with other U.S. government agencies to create a plan by the end of 2026 to implement a timekeeping system in space, known as Coordinated Lunar Time (LTC), according to a memo obtained by Reuters.
Variations in gravity on celestial bodies, among other factors, influence the passage of time differently than on Earth. LTC serves as a reference for timing lunar missions that require extreme precision for spacecraft and satellites.
Kevin Coggins, NASA’s space communications and navigation chief, explained, “A clock that works accurately on Earth will run at a different pace on the moon.”
According to the memo from OSTP Director Arati Prabhakar, Earth-based clocks would lose approximately 58.7 microseconds per day for individuals on the Moon, leading to a further time deviation. Periodic fluctuations are also a factor.
Coggins likened the atomic clocks at the U.S. Naval Observatory to the heartbeat of the nation, emphasizing the importance of synchronization in space.
NASA’s Artemis program aims to land astronauts on the moon and establish a scientific base to aid future Mars missions. Numerous companies, spacecraft, and countries are involved in this venture.
Uniform lunar time standards are deemed crucial by OSTP officials to ensure data security between spacecraft and synchronize communications between Earth, lunar assets, and astronauts, preventing errors in mapping and location tracking.
The deployment of an atomic clock on the moon’s surface may be necessary as commercial activities expand to ensure operational coordination, transaction reliability, and logistical efficiency.
The United States, which has previously landed astronauts on the moon, faces competition from other countries like China, Japan, and India with their own lunar exploration plans.
The memo also highlights the importance of defining Coordinated Lunar Time through existing standards bodies and agreements like the Artemis Accords, emphasizing the need for international cooperation in space.
Coordinated Universal Time plays a role in implementing Coordinated Lunar Time, with the United Nations’ International Telecommunication Union defining it as an international standard.
In October, NASA’s Europa Clipper spacecraft will begin a journey to explore Jupiter’s icy moon Europa (imagined above).
NASA has asked METI International, the scientific organization I lead, to leverage our expertise in trying to make contact with extraterrestrial intelligence by creating a symbolic engraved tantalum plate on a spacecraft. We asked them to help us create a message, a greeting from one water world to another.
We helped create two parts of the message. First, we collected a globally representative sample of recordings of water words in 103 languages. Each language is displayed as a waveform on the outside of the panel (pictured above) that protects sensitive scientific equipment.
On the other, inward-looking side (see below), we designed the scientific part of the message. This refers to water in terms of the “water hole,” a frequency band between the hydrogen and hydroxyl (combining to form water) emission lines in the radio spectrum where many of the early searches for intelligence beyond Earth took place. I’m explaining.
Other parts of the internal message include: Drake equation to estimate the number of extraterrestrial civilizations in the galaxy. Microchips containing the names of 2.6 million supporters will be added soon.and Poet Laureate of the United States Ada Limon’s Poem to Europa ends like this. “O second moon, we too / are made of water, of a vast, beckoning ocean… / of the need to call out in the darkness.” The European Clipper will fly to Jupiter in April 2030. We are planning to enter the orbit of
douglas vacochChairman of Ministry of Economy, Trade and Industry International
View of the lunar surface taken from the tilted position of the SLIM lander
JAXA
Most landers we send to the Moon will operate for one lunar day, or about two weeks on Earth, until they die from the extreme cold of the lunar night. But Japan’s Smart Lunar Lander (SLIM) has now survived two nights on the moon and continues to send images back to Earth, an amazing feat.
SLIM is Japan’s first lunar lander and becomes the fifth country to land a spacecraft on the lunar surface. When the plane landed on January 19, it was tilted and the solar panels could not provide enough power to continue operating for more than a few hours. After nine days, the sun began to move again, moving across the sky.
But just three Earth days later, the lunar night began. Nighttime temperatures on the moon can drop as low as -133°C (-208°F), potentially damaging the spacecraft’s batteries and electronics. Normally, the lunar lander shuts down on a lunar night and never wakes up again, but it started up again on February 25 as the sun rose above Slim.
This in itself was a surprise. The lander was not specifically designed to withstand lunar nights, and its original mission was scheduled to end at night. So, as night approached again, this seemed to be the end of SLIM.
However, on March 27th, the SLIM official account I posted an image above X has the following caption: “Last night, we received a response from SLIM confirming that SLIM achieved its second success during the night. Last night, the sun was still high and the equipment was hot, so I quickly turned on my navigation camera. It looks like the lander will be able to resume analyzing its surroundings within the next few days.
Its survival is especially surprising because while some spacecraft use radioactive elements to stay warm, SLIM does not. “This is a significant achievement considering we are not using radioisotope heaters,” he says. Haim Benaroya at Rutgers University in New Jersey. “This result is important and impressive, given that this is a major design consideration for electronics (and people) to survive moonlit nights.” SLIM has failed while many other spacecraft have failed. Analyzing how they survived may help us understand how they stay warm on the moon.
Let’s prepare for an amazing event. A stunning lunar eclipse is set to occur on Monday, March 25, 2024, when the Earth aligns between the Sun and the Moon. This alignment causes the Earth’s shadow to fall on the Moon, resulting in a dimmer appearance.
This event coincides with the Festival of Colors, a traditional Hindu celebration marking the arrival of spring and new beginnings. For locations more than 6 hours behind GMT (west of Chicago), the eclipse will start on the night of March 24, 2024.
Curious about where to witness a lunar eclipse, the difference between penumbral and umbral solar eclipses, the possibility of the moon turning red, or the astrological sign the moon will be in during a solar eclipse? Find answers to these questions below.
If you’re excited about clear nights this year, consider planning ahead with our UK full moon calendar and beginner’s guide to astronomy.
When does a lunar eclipse occur?
A penumbral lunar eclipse is scheduled for March 24th to 25th, 2024.
For viewers in the UK, the eclipse will take place a few hours before sunrise, with the moon setting as it reaches its maximum phase. In Bristol, the sunrise will be at 6am GMT on March 25th, placing the eclipse in the early morning sky just before the moon sets.
At 6:03 a.m. GMT, the eclipse will peak while the moon is still above the horizon. The true maximum at 7:12 a.m. won’t be visible as the moon will have set by then.
The moon will start to set at 6:11 a.m. GMT, but its proximity to the horizon and the eclipse phase may dim it before its descent, possibly making it almost invisible.
During a lunar eclipse, the moon will be above the horizon, providing better visibility for observers in the United States.
For Bristol, UK:
A penumbral solar eclipse begins: March 25th, 4:53 a.m. GMT (Moon visible on the horizon)
Maximum eclipse: March 25, 7:12 a.m. GMT (moon below the horizon)
Penumbral eclipse ends: March 25, 9:32 a.m. GMT (moon below the horizon)
For New York City, USA:
A penumbral solar eclipse begins: March 25th 12:53am ET (Moon visible above the horizon)
Maximum eclipse: March 25th, 3:12 a.m. ET (Moon visible on the horizon)
Penumbral eclipse ends: March 25th, 5:32am ET (moon visible on the horizon)
For San Francisco, USA:
A penumbral solar eclipse begins: March 24th, 9:53 PM PST* (Moon visible on the horizon)
Maximum eclipse: March 25th, 12:12am PST (Moon visible on the horizon)
Penumbral eclipse ends: March 25th, 2:32 a.m. PST (Moon visible on the horizon)
* In the United States, clocks changed to daylight saving time on March 10th. In the UK, clocks change to BST on March 31st.
Where can I see the lunar eclipse?
The lunar eclipse on March 25, 2024, will be visible across the United States, South America, Canada, the United Kingdom, Europe, Africa, Asia, Western Australia, and the Arctic and Antarctic regions.
For locations west of Chicago, Illinois, the eclipse will begin on March 24 and last until sunrise.
What exactly is a penumbral eclipse?
All objects cast two shadows when in front of a light source: the dark umbra and the bright penumbra. This remains true when the Earth is between the Sun and the Moon.
During a lunar eclipse, when the moon enters Earth’s penumbra, a partial shadow is formed. Penumbral eclipses are subtle and may be challenging to observe. On Earth, this translates to a gradual dimming of the Moon’s brightness.
During a lunar eclipse, the Earth casts a shadow on the moon. – Photo credit: Getty
During a total lunar eclipse, as the Moon enters Earth’s umbra, it takes on a reddish hue for a more dramatic effect. The intensity of the red color depends on the Moon’s position in Earth’s shadow, appearing blood red in the deepest shadow and pale red in partial shadow.
For future lunar residents, standing on the Moon during a lunar eclipse would reveal Earth blocking the Sun, a scenario where a solar eclipse is witnessed.
What causes a lunar eclipse?
A lunar eclipse occurs when the Earth moves in front of the Sun, casting its shadow on the Moon. Since the Moon reflects sunlight back to us, its visibility during a lunar eclipse is affected when this sunlight is obstructed.
There are different stages to a lunar eclipse: transition through Earth’s penumbra, entry into the dark umbra, return to the penumbra, and finally exit from the shadow completely.
During the upcoming lunar eclipse on March 24-25, 2024, the Moon will stay within the penumbra without entering the central umbra.
What constellation is the moon in?
The penumbral eclipse on March 24-25, 2024, will take place while the Moon is in Virgo, mirroring the placement of Spica, the brightest object in the constellation but slightly to the west.
Will the moon turn red?
Unfortunately, the lunar eclipse on March 24-25, 2024, will not be total, meaning the Moon will not turn red. At most, observant viewers may notice a slight darkening, far less dramatic than during a total lunar eclipse.
Under most circumstances, the lunar eclipse will go unnoticed: “Regrettably, this full moon will only pass through Earth’s darker outer shadow. The lunar eclipse will not be observable at all!” Dr. Darren Baskill, University of Sussex, remarks.
To visualize the distinction, Dr. Baskill suggests placing your hand between a bright light and a surface at night, observing the fainter penumbra surrounding the dark umbra of your hand.
Why do solar eclipses come in pairs?
Observant viewers will notice solar and lunar eclipses occurring successively. After the lunar eclipse on March 24-25, 2024, a solar eclipse will follow on April 8, 2024, promising an even more impressive celestial event.
This phenomenon arises from the alignment of the Sun, Earth, Moon, and their orbital planes.
The Moon’s orbit is slightly inclined compared to Earth’s orbit around the Sun, leading it to pass slightly above or below Earth’s orbital path. Despite this, specific points where the Moon’s orbit intersects Earth’s orbital path—termed “nodes”—exist.
During a solar eclipse season, recurring approximately every six months, alignments near these nodes permit both solar and lunar eclipses to occur. The full moon’s passage through Earth’s shadow creates a lunar eclipse, which is followed by a solar eclipse two weeks later, during the new moon phase, with the Sun, Earth, and Moon aligning perfectly.
When is the next lunar eclipse?
Following March 25, 2024, a partial lunar eclipse is slated for September 18, 2024, preceding a total lunar eclipse about a year later, on March 14, 2025.
Subsequent total lunar eclipses will occur in three consecutive instances, on September 7, 2025, and March 3, 2026.
Here is a list of upcoming lunar eclipses:
March 25, 2024: penumbra
September 18, 2024: Partial
March 14, 2025: total
September 7, 2025: total
March 3, 2026: total
August 28, 2026: Partial
February 20, 2027: penumbra
July 18, 2027: penumbra
August 17, 2027: penumbra
January 12, 2028: Partial
July 6, 2028: Partial
December 31, 2028: total
June 26, 2029: total
December 20, 2029: total
Tips for viewing the lunar eclipse
No special equipment is needed to observe a lunar eclipse, as it is entirely safe to view the moon even during the event. The moon reflects sunlight and lacks dangerous radiation. Therefore, it poses no threat to human eyes.
On a clear night, simply use your eyes to witness the eclipse. A reclining chair may enhance comfort during outdoor viewing. For UK spectators, the eclipse will transpire before dawn, with the moon low on the horizon, possibly visible from indoors if not obstructed by foliage.
To maximize visibility, avoiding areas with high light pollution remains crucial.
Where is the comet located relative to the moon?
About our expert Dr. Darren Baskill
Dr. Darren Baskill is an Outreach Officer and Lecturer in the Department of Physics and Astronomy at the University of Sussex. He previously instructed at the Royal Observatory Greenwich and managed the annual Astronomical Photographer of the Year competition.
On September 26, 2022, NASA’s Double Asteroid Redirection Test (DART) mission successfully impacted Dimorphos, the natural satellite of the near-Earth binary asteroid Didymos. New numerical simulations show that the DART impact triggered global deformation and resurfacing of Dimorphos.
The asteroid moon Dimorphos was seen by NASA’s DART spacecraft 11 seconds before impact. His DRACO imager aboard DART captured this image from a distance of 68 km (42 miles). This image was the last one to include all dimorphos in the field of view. Image credit: NASA/Hopkins Applied Physics Laboratory.
DART was a planetary defense mission that demonstrated the possibility of using kinetic impactors to alter the orbits of asteroids.
The collision was successful and highly effective, resulting in Dimorphos’ orbital period around Didymus being shortened from its original 11 hours and 55 minutes to 33 minutes.
The LICIACube Unit Key Explorer (LUKE) instrument aboard the cubesat took images of the system between 29 seconds and 320 seconds after impact, showing the ejecta stream and other debris that spread for several kilometers from the impact site. revealed a complex pattern.
Furthermore, the dramatic brightening of the Didymos system due to solar illumination of the ejected impact ejecta was observed by ground-based and space-based telescopes for many weeks after the impact.
These three Hubble images capture the breakup of Dimorphos when it was intentionally collided by DART on September 26, 2022. The top panel, taken two hours after impact, shows the ejecta cone (estimated at 1,000 tons of dust). The center frame shows dynamic interactions within the Didymos-Dimorphos binary system that begin to distort the cone of ejecta patterns approximately 17 hours after impact. The most notable structure is a rotating windmill-shaped feature. The windmill is connected to Didymus’s gravitational pull. In the bottom frame, Hubble captures debris being pushed back into the comet-like tail by the pressure of sunlight on tiny dust particles. This spreads out into a column of debris, with the lightest particles traveling fastest and furthest away from the asteroid. The mystery deepens after Hubble recorded the tail splitting into two for several days. Image credit: NASA/ESA/STScI/Jian-Yang Li, PSI/Joseph DePasquale, STScI.
In a new study, University of Bern scientist Sabina Raducan and colleagues use realistic constraints on the mechanical and compositional properties of dimorphos, informed by DART’s initial results, to create a state-of-the-art impact The DART impact was modeled using physical code.
The simulations that best match observations of the impact suggest that Dimorphos is weakly cohesive, similar to asteroids Bennu and Ryugu, and lacks large rocks on its surface.
The researchers suggest that Dimorphos may be a pile of debris formed by the rotational shedding and re-accumulation of material ejected from Didymos.
Their model also suggests that DART’s impact may not have created an impact crater, but instead may have changed the shape of the moon as a whole, a process known as global deformation, which could have been caused by material from within. It also indicates that it may have caused the resurfacing of Dimorphos.
The discovery provides further insight into the formation and characteristics of binary asteroids and could have implications for future exploration, including ESA’s Hera mission and asteroid deflection efforts.
“ESA’s future Hera mission may discover reformed asteroids rather than well-defined craters,” the authors concluded.
their paper It was published in the magazine natural astronomy.
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SD Raducan other. Physical properties of the asteroid Dimorphos obtained from the DART impact. Nat Astron, published online on February 26, 2024. doi: 10.1038/s41550-024-02200-3
Many years ago, at that time david kipping When he lived in London, he would walk home through the city and look up at the moon. For astronomers, its dimly glowing presence was a nightly source of inspiration. “It reminded us that satellites are waiting for us around exoplanets,” he says. “It made sense that we should look for them.”
It would be exciting to discover an exomoon, a natural satellite of a world outside our solar system. First, the moon may play a key role in determining the habitability of its host planet by dampening its wobble and promoting a stable climate, in the same way it did for Earth. there is. There may also be strange and wonderful configurations, such as a lunar ring or a moon with its own moon. But the most interesting thing is that some of them may be more suitable for life than exoplanets.
Kipping, now at Cornell University in New York, is part of a small community of astronomers exploring solar moons. At least statistics are on your side. About 5,500 exoplanets have been discovered so far, some of which may have dozens of moons. The problem is that it’s not easy to prove its existence. Two previous sightings of Kipping have been hotly debated.
But now there’s hope on the horizon, with many new ways to explore these objects, from monitoring rogue planets that have abandoned their stars to monitoring exoplanets’ gravitational wobbles. Armed with these new technologies, and new telescopes also in development, the Moon will…
A privately built spacecraft on the moon has sent back new photos from the lunar surface. The images captured the spacecraft’s much-lauded descent and the moment it rolled over shortly after landing.
The Odysseus lander, built by Houston-based Intuitive Machines, touched down on the moon on February 22, making it the first commercial ship to reach the moon’s surface and the first U.S. ship to reach the moon in more than 50 years. It made history as a spaceship.
The Odysseus Lunar Module took this image about 35 seconds after it rolled over on its approach to the landing site. Intuitive machine via AP
The next day, Intuitive Machines announced that Odysseus had rolled over as it landed near a crater called Malapart A near the moon’s south pole. Company officials said the 14-foot-tall lander was operational, but part of the rover’s antenna was pointing toward the ground, limiting its ability to communicate with flight controllers on Earth. Ta.
with updateMondayIntuitive Machines said it was continuing to communicate with the spacecraft, adding that flight controllers “will collect data until the lander’s solar panels are no longer exposed to light.”
Company officials said they expect to be able to communicate with Odysseus until Tuesday morning, based on the positions of the Earth and the moon. The lander was originally expected to spend about a week collecting data on the lunar surface before the lunar night begins and the spacecraft powers down.
In its latest update, the company announced that Odysseus’ instruments detected nine safe landing sites within the target zone near the moon’s south pole. The moon’s south pole region has long intrigued scientists because water ice is thought to be relatively abundant in permanently shadowed craters.
The upcoming full moon in February 2024, known as the snow moon, will be the second one of the year. Despite being a micromoon this month, it signifies the end of winter and the coming of spring.
Wondering when is the best time to witness this full snow moon in the UK? How close is the micromoon? And the current constellation of the moon? Here is everything you need to know about the full moon in February 2024.
If you want to enjoy a clear night sky, explore our beginner’s guide to astronomy. To get familiar with some unique constellations, this guide is the perfect starting point.
Interested in capturing beautiful moon photos? Check out our practical moon photography guide that is filled with expert advice from astrophotographers and even BBC Night Sky presenter Pete Lawrence. Whether you are a beginner or an advanced user, we have tutorials to suit your needs.
When will we see the snow moon in 2024?
If the skies are clear, the snow moon will be visible in the early morning and evening on February 24, 2024, across the UK, US, and other parts of the world.
The peak illumination of the full moon in February will happen at 12:30 PM GMT. For viewers in the UK, this means that the moon will be fully illuminated during the day when it is below the horizon. However, it will still appear “full” when it rises at night and for a few days after.
In London, the Snow Moon will rise in the east-northeast on February 24 at 5:27pm GMT and set in the west-northwest at 7:32 a.m. on February 25th.
In New York, the Snow Moon will rise in the east-northeast on February 24 at 5:55 pm ET and set in the western sky at 7:18 am on February 25th.
In Seattle, the Snow Moon will rise in the east-northeast on February 24 at 6:07 pm PST and set in the west at 7:40 a.m. on February 25th.
What’s unique about the 2024 Snow Moon?
This year’s Snow Moon is special for two reasons. First, it falls on the day before the moon reaches its apogee, making it the smallest full moon of the year. Secondly, it coincides with the Lunar New Year celebrations, including the Lantern Festival.
On February 24th, National Tortilla Day is also celebrated in the US, giving you another reason to toast the full moon with chips and dip.
When is the best time to view the 2024 Snow Moon?
The best time to observe the snow moon is in the evening of February 24th, just after sunrise, or before moonset on the morning of February 24th. The moon will be closest to full illumination and low on the horizon in both cases.
In London, the moon will set at 7:21 a.m. GMT on the morning of February 24th, offering a picturesque sight low on the horizon. And if you wait until evening, the moon will rise at 5:27pm GMT on February 24th, just after sunset.
The Earth’s counterclockwise rotation means that the moon will appear to move across the sky from left to right in the Northern Hemisphere and from right to left in the Southern Hemisphere at a rate of 15 degrees per hour.
Why is February’s full moon called the snow moon?
February is one of the coldest months of the year in the Northern Hemisphere due to the cooling effects of winter and the sun’s lower angle. The snow moon gets its name from the significant snowfall experienced in the US, Canada, and Europe during this time.
What constellation is the moon in?
On February 22nd, the Moon will be in Cancer, and by the full moon, it will have moved into Leo, situated between Regulus and Keltan. Three days later, the moon will shift to Virgo, followed by Libra from March 1st.
Is the snow moon a supermoon?
No, the February 2024 snow moon is not a supermoon, as it will be a micromoon. Supermoons occur when the moon is closest to Earth, known as perigee, making it appear larger and brighter in the sky.
How far away is the moon?
During apogee on February 25, the moon will be 406,312 km (252,470 miles) away from Earth, making it the smallest full moon of 2024. The farthest point of the moon from Earth will be on October 2, 2024, at 406,516 km (252,597 miles) during a new moon.
What causes a full moon?
A full moon occurs when the side facing Earth is fully illuminated by the sun, as the Earth is positioned between the Sun and the Moon. This alignment, known as “syzygy,” only lasts for a moment but signifies a full moon in the lunar cycle.
The moon’s cycle lasts about 29.53 days, with the full moon marking the midpoint. The sun and moon balance each other during a full moon, with the moon appearing full all night but technically only being “full” for a brief moment.
Uranus (left) and Neptune (right) have several more moons
NASA, ESA, Mark Showalter (SETI Institute), Amy Simon (NASA-GSFC), Andrew I. Hsu, Michael H. Wong (University of California, Berkeley)
Astronomers have discovered new moons around Uranus and Neptune for the first time in 10 years. These are the faintest moons ever discovered orbiting a planet, confirming a long-held idea about moons in the outer solar system.
Scott Shepherd from the Carnegie Institution for Science in Washington, D.C., discovered these moons using the Magellan Telescope in Chile and confirmed them using several other large telescopes around the world. “We looked about four times deeper than anyone has ever looked,” Shepherd said. “These satellites are at the edge of our capabilities. They’re just faint, faint points of light.”
Typically, when looking for the moon, you can only get a maximum exposure of about 5 minutes before it becomes overexposed and the moon’s movement renders it useless. Shepard and his team got around this problem by taking many of these five-minute images in quick succession, observing them for hours, and then combining the darker parts of the images. This allowed them to find dim points of light shining from the faintest moons ever discovered, as well as the smallest moons ever discovered around each planet.
The new moon around Uranus is tentatively named S/2023 U1, but will eventually be given the name of a Shakespearean character, along with the planet’s other moons. It is only about 8 kilometers in diameter and orbits once every 680 Earth days.
One of the new moons around Neptune is called S/2021 N1, and we await its official name from Greek mythology. With a diameter of about 14 kilometers, it takes about 27 Earth years to orbit the planet, making it the farthest moon from its host planet ever discovered. This is also the darkest moon ever discovered.
Discovery image of Uranus’ new moon S/2023 U1 with scattered light from Uranus and trails from background stars
Scott S. Shepherd/Carnegie Institution for Science
The brighter, larger moon discovered orbiting Neptune is called S/2002 N5. As its name suggests, this satellite was first discovered more than 20 years before, but was lost before astronomers could confirm its orbit. “The moon can get lost really easily,” Shepard says. “Basically, you need really good weather, your telescopes need to work perfectly, and everything needs to go well to detect these satellites.” If something goes wrong and a planned observation is lost, the satellite moves out of orbit and becomes very difficult to find again.
Each of the three new moons has an orbit similar to the other two moons in its planetary system, and these fellow travelers form small groups that orbit together. This means that each of these groups likely formed together when larger moons broke up during the early solar system chaos.
“Until now, it was unclear whether Uranus and Neptune had a group of exomoons like Jupiter and Saturn,” Shepard said. “We believe these are debris from satellites that were once much larger, but we’ll probably find many more smaller satellites.” Unfortunately, we’re reaching the limits of what we can discover with current technology, he says it may take even longer before these smaller moons are discovered around Uranus and Neptune.
A robotic spacecraft made history Thursday by becoming the first civilian spacecraft to land on the moon and the first U.S. vehicle to accomplish the feat in more than 50 years.
The lander, built by Intuitive Machines, touched down on the moon around 6:23 p.m. ET after overcoming a late-stage malfunction with its onboard laser equipment. The Nova-C lander, nicknamed Odysseus, was the first American spacecraft to reach the moon’s surface since the Apollo 17 mission in 1972.
“Houston, Odysseus has found a new home,” Tim Crane, the company’s chief technology officer, radioed back from the control room as employees cheered and celebrated.
It took several minutes to confirm the landing. As expected, mission controllers lost contact with the spacecraft as it made its final descent.
The company said it was able to detect a weak signal from one of Odysseus’ antennas, but needed more data to determine how the spacecraft landed and in what conditions. About two hours later, the team received good news.
“After troubleshooting communications, flight controllers confirmed that Odysseus was upright and beginning to transmit data,” Intuitive Machines said. mentioned in the X update. “Currently, we are working on downlinking the first images from the lunar surface.”
Intuitive Machines CEO Stephen Altemus called the landing an “outstanding effort” and praised the entire team. “I know this was a blow, but we’re on the ground and communicating. Welcome to the moon,” Artemus said.
NASA Administrator Bill Nelson also congratulated Intuitive Machines on their landing, calling the milestone a “victory.”
“Odysseus took the moon,” Nelson said in a video message played during a live broadcast of the event. “This feat is a huge step forward for all humanity.”
Odysseus was launched into space on February 15th aboard a SpaceX Falcon 9 rocket. The 14-foot-tall lander then traveled more than 620,000 miles over six days to reach the moon.
The landing time was adjusted several times on Thursday as Intuitive Machines adjusted the spacecraft’s orbit around the moon.
When Odysseus descended to the moon’s surface, he targeted a landing site near a crater called Malapart A, near the moon’s south pole. The moon’s south polar region has long intrigued scientists because water ice is thought to be relatively abundant in the region’s permanently shadowed craters. .
Odysseus travels with a combination of commercial cargo and NASA scientific equipment. The lander is expected to spend about a week collecting data on the lunar surface before lunar night begins and the spacecraft powers down.
About an hour before landing, the company also scrambled to resolve a problem with its laser equipment, which is designed to help the rover assess the lunar surface terrain and find a safe, non-hazardous landing site. . Odysseus’s laser rangefinder was inoperable, but a sensor from NASA’s scientific instruments aboard the lander was reused.
The mission is part of the Commercial Lunar Landing Services Program, established by NASA to help private companies develop lunar landers. NASA will eventually hire these companies to transport cargo and scientific equipment to the moon’s surface as part of the agency’s broader ambitions to return astronauts to the moon.
NASA awarded Intuitive Machines $118 million to perform the moon landing.
Last month, another company tried unsuccessfully to send a lander to the moon under the same NASA program. The spacecraft, built by Pittsburgh-based Astrobotic Technology, suffered a catastrophic failure shortly after launch, forcing the company to abort the entire mission.
In addition to being the first commercial spacecraft on the moon, Odysseus also joined an elite club. To date, only the space agencies of the United States, the former Soviet Union, China, India, and Japan have successfully made a controlled or “soft landing” on the moon. Moon.
Photo taken by the Odysseus spacecraft in lunar orbit
intuitive machine
Intuitive Machines' Odysseus lander has landed on the moon. This is the first time a private company has landed a spacecraft on the moon, a welcome success after a string of recent high-profile landing failures by other companies.
The Odysseus spacecraft launched on a Falcon 9 rocket on February 14 for the flight, called the IM-1 mission. It entered lunar orbit on February 21st and landed near the moon's south pole on February 22nd.
Live footage from air traffic controllers became tense as the scheduled landing time passed without any contact from the lander. Finally, minutes after Odysseus was scheduled to land, Tim Crane, mission director in Intuitive Machines' mission control room, said, “We're receiving a signal. It's faint, but it's definitely there.'' “I'm doing it.”
The signal indicated that the spacecraft had landed on the moon, but the state of the spacecraft is still unknown. However, the landing was successful. “We know this has been a pain, but we're on the surface,” said Stephen Altemus, CEO of Intuitive Machines. “Welcome to the moon”
Before this landing, three other companies attempted to send landers to the moon. SpaceIL's Beresheet spacecraft was launched in 2019, and ispace's Hakuto-R mission was launched in 2022, but both crash-landed and were destroyed.
Astrobotic's Peregrine lander didn't even get very far after launching in January. A fuel leak forced the operators to return to Earth to burn up in the atmosphere. The success of the IM-1 has brought Intuitive Machines into an elite club. To date, only the national space agencies of the Soviet Union, the United States, China, India, and Japan have successfully landed on the moon.
Now that we have landed safely, we can begin the second part of the IM-1 mission. Odysseus carried six NASA payloads and six commercial payloads to the Moon. Some of these already serve that purpose, such as landing aids and cameras to take pictures of the landing. Some people have succeeded simply by reaching the moon. Perhaps most notable is artist Jeff Koons' collection of his 125 small sculptures. Other instruments are also now beginning their missions, including instruments that will measure how the moon's surrounding environment affects its surface.
The IM-1 mission is part of NASA's Commercial Lunar Payload Services (CLPS) initiative, through which government contracts are awarded to private companies to build spaceflight capabilities through public-private partnerships. Three more moon landings are planned through CLPS in 2024, including an Intuitive Machines mission to harvest water ice from the moon's south pole.
Intuitive Machines is preparing to create history as the first private company to land on the moon following last week’s launch from Kennedy Space Center in Florida.
The Nova-C lander named Odysseus (affectionately nicknamed “Odie”) is scheduled to touch down at 5:30pm ET (10:30pm GMT) and everything is proceeding as planned. This will be the first instance of an American-led mission reaching the moon since the end of the Apollo program over 50 years ago.
The mission is part of NASA’s Artemis Commercial Lunar Payload Service (CLPS) initiative, aiming to return humans to the moon by the end of this decade, led by a private company.
Since NASA’s Apollo 11 landed in 1969, several countries including the former Soviet Union, China, India, and Japan have successfully placed equipment on the moon.
Today’s “space race” is different not only because more countries are involved but also due to the private sector having a central role on the forefront. It is now possible for an individual or company with sufficient funds to place something on the moon.
The mission includes all of NASA’s key experiments, with a total of six experiments collecting data critical to NASA’s crewed Artemis missions later this decade. This leaves room for additional unique additions.
1. Puffer jacket
Columbia Sportswear has developed a lining for the Omni-Heat Infinity Jacket, designed to keep explorers warm in harsh environments, to be used on the Odie during the mission to protect the lander’s equipment from extreme temperatures.
Image credit: Intuitive Machines
2. Photos for the gram
Intuitive Machines CEO Steve Altemus challenged students back in 2019 to capture photos of the landing from a third-person perspective, leading to the creation of the EagleCam which is poised to capture snapshots of the lunar landing.
The EagleCam is the first third-person photo camera for a landing and also serves as the first moon landing project built by a college student, it also uses WiFi on the moon.
3. Miniature satellite
Renowned American artist Jeff Koons has created 125 stainless steel sculptures depicting the moon as seen from Earth, along with an array of scientific equipment to be placed on the moon.
4. (Almost) All Human Knowledge
The Arch Mission Foundation is sending a permanent archive of human information along with the lander, ensuring that human knowledge is safely stored for posterity.
According to Intuitive Machines, the repository includes archives like the Rosetta Project, Long Now Foundation content, Project Gutenberg content, and other cultural archive datasets, and an English version of Wikipedia.
5. A very stylish file cabinet
Lone Star Data Holdings has secured a location for the Independence data center within the IM-1 mission, allowing the safe storage and transmission of documents on the moon.
When can we see the moon landing?
Coverage of the Intuitive Machine’s moon landing can be followed live through NASA’s web services from 4pm ET (9pm GMT). Live videos and comments can be accessed through NASA TV, NASA+ streaming service, or the NASA app.
About our experts
Science writer and journalist Joel Renstrom and computer scientist and author Peter Bentley provided insights for this story.
The early crescent phase of the moon following the new moon is well located in the early spring evening sky. From February to March, the spring crescent moon looks very beautiful in the evening glow.
If you have binoculars or a small telescope, there are some things to keep in mind. Known as the clair-obscure effect, or trick of the light, this effect causes recognizable shapes to appear within a jumbled area of moonlight and shadow. Two popular examples are known as Moons X and V. These occur simultaneously at different locations along the moon’s terminator (the line that separates night and day).
We spot them in the daytime sky around 12:40 a.m. on February 17th and again at 2:20 p.m. on March 17th. The effect lasts only a few hours.
Another striking Clair Obscure effect is the Jeweled Handle. This occurs a few days after the waxing moon, when the crooked peaks of the Montes Jura (Jura Mountains) are illuminated at dawn.
These Clare Obscure effects, or tricks of light, will be visible over the next month. Go outside on a sunny day and watch them. – Image credit: Pete Lawrence
Its unique arc appears to extend into the lunar night. This can be seen with just a keen eye, but is best seen with optical aids. The jeweled handle is best observed during daylight hours on February 19 at 3:50 p.m.
If the evening of March 13 is clear, the waxing moon will appear near bright Jupiter. If the skies are clear and you can see it with just your eyes, it’s a spectacular sight.
Speaking of eyes, if you have a small telescope, look at the southern part of the moon in a few days, on March 18th. Just before 8 p.m., the oval exterior of Clavius, the large crater, is mostly dark and shrouded in shadow.
Two exceptions are the raised crater rims that are illuminated within them. These form another perspective effect known as the Eye of Clavius.
Houston-based company successfully launched a private lunar lander into space on its second attempt early Thursday morning. The spacecraft, developed by Intuitive Machines, took off from NASA’s Kennedy Space Center in Cape Canaveral, Florida, at 1:05 a.m. ET atop SpaceX’s Falcon 9 rocket. The original launch was scheduled for Wednesday but was canceled due to a problem with the rocket’s methane fuel. Intuitive Machines aims to land the first commercially built spacecraft on the moon, which would be the first U.S. moon landing in over 50 years. The lander, named Odysseus, will spend a week in space before attempting to settle on the moon’s surface on February 22nd. This mission comes after another company, Astrobotic Technology, attempted but failed to send a lander to the moon’s surface due to a severe fuel leak shortly after liftoff. Both Intuitive Machines and Astrobotic Technology are part of NASA’s Commercial Lunar Lander Services Program, designed to accelerate the development of lunar landers by private companies to deliver cargo to the lunar surface and transport scientific equipment. On its next flight, Odysseus will carry a combination of commercial cargo and NASA scientific equipment and is expected to land near the moon’s south pole. NASA’s Commercial Lunar Payload Services Program is part of NASA’s Artemis program, which aims to return astronauts to the Moon in the next few years. The timeline for upcoming Artemis missions has been delayed, and NASA eventually hopes to begin regular missions to the moon and build a base camp there.
Odysseus spacecraft scheduled to launch to the moon on February 14th
space x
US company Intuitive Machines is soon to become the first private company to land a spacecraft on the moon. Three previous efforts by other companies have failed, highlighting the perilous path ahead for Intuitive Machines' Nova-C lander.
The spacecraft, nicknamed Odysseus, is scheduled to lift off from Cape Canaveral, Florida, on February 14. It will fly aboard a Falcon 9 rocket manufactured by SpaceX. If the mission, called IM-1, goes well, Odysseus should land near the moon's south pole on February 22.
The goal of the IM-1 mission, in addition to proving that private companies can land on the moon, is to deliver six NASA payloads and five commercial payloads to the lunar surface. NASA's equipment includes tools to study how the landing itself blows away plumes of lunar dust, several instruments to help the aircraft land safely, and to measure radio waves and make sure they are on the moon's surface. Contains equipment to measure how it affects Commercial payloads include a camera that will be dumped from the lander before landing to take photos of the landing, and 125 small sculptures by artist Jeff Koons, designed to establish an archive of human knowledge on the lunar surface. Includes tip.
IM-1 is part of NASA's Commercial Lunar Payload Services (CLPS) initiative, a series of government and private sector contracts designed to accelerate exploration and develop the lunar economy. This is his second mission in CLPS. The first mission, Astrobotic's Peregrine lander, suffered a fuel leak shortly after liftoff in January and failed to reach the moon.
There have been two attempts by private companies to land on the moon, SpaceIL's Beresheet spacecraft and iSpace's Hakuto-R, but both crash-landed and were destroyed. If Odysseus succeeds where other landers have failed, Intuitive Machines' next step will be to send another Nova-C lander to the moon's south pole, equipped with a drill to harvest subsurface ice. That mission is planned for March 2024.
A new moon may not be all that remarkable (literally) astronomically speaking, but it does mark the beginning of a new lunar cycle. And this month, the new moon in February also opens the Chinese New Year.
In China, Lunar New Year is a time to let go of the negative energy from the previous year and welcome good fortune and prosperity in the new year. It’s a time for family celebrations and to exorcise evil spirits.
For those who believe in astrology (spoiler: it doesn’t make much scientific sense), a new moon generally represents a fresh start. It’s a time to set intentions, start projects, and focus on personal growth. Astrologers believe that the energy of the new moon will help you plan for the future and sow seeds.
It is often associated with opportunities for self-reflection, goal setting, and personal renewal in various aspects of life. Various astrological signs are believed to influence how this energy manifests in individuals.
Of course, astrology is subjective to some extent, so it’s best to take it with a grain of salt.
But the new moon is exciting for another reason. It’s a more “visible” reason. Solar eclipse. A solar eclipse occurs when the moon passes in front of the sun. Similarly, a new moon occurs when it is on the same side of the Earth as the sun, so a solar eclipse is: only It occurs at the new moon.
When is the next new moon?
The next new moon will be on February 9, 2024.
Like full moons, new moons are also named according to the season. These usually coincide with full moons that accompany the same lunar cycle.
The beginning of each lunar cycle is marked by a new moon. A new moon occurs every 29.53 days (29 days, 12 hours, 44 minutes, and 3 seconds to be exact).
Here are all the new moons in 2024 as seen from London:
January 11th 11:57am: new wolf moon
February 9th, 10:59pm: new snow moon
March 10th 9am: new worm moon
April 8th, 6:21pm: New pink moon*
May 8th 3:22am: new flower moon
June 6th, 12:38pm: new strawberry moon
July 5th, 10:57pm: new back moon
August 4th 11:13am: new sturgeon moon
September 3rd, 1:56am: New Corn/Harvest Moon
October 2nd, 6:49pm: new hunter’s moon
November 1st, 12:47pm: new beaver moon
December 1st 6:21am: new cold moon
December 30th, 10:27pm: black Moon
*Includes solar eclipse
When is Chinese New Year?
Lunar New Year (also known as Lunar New Year or Spring Festival) is the second new moon after the winter solstice. The date of the Lunar New Year varies between January 21st and February 20th according to the Gregorian calendar.
This year, in 2024, Chinese New Year begins on February 10, 2024.
In China (and other countries in East Asia), this is one of the most important times of the year and festivals are held. May last up to 16 days. The first seven days of his life are designated as official holidays, and the celebration culminates in a lantern festival. full Mon – February 24, 2024.
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As the lunar cycle progresses, it becomes increasingly visible as more sunlight is reflected and moved away from the Sun. If you really want to see the new moon, the first visible phase of the moon is the very thin, sliver-like waxing crescent that occurs just after the new moon. It appears in the western sky after sunset.
The new moon can be seen soon
During a solar eclipse, if you have proper eye protection, you can see the shape of the moon passing in front of the sun, but you can’t actually see it. . You can see every detail.
There is also a phenomenon called “Earth Shine”. This is where the moon is at its thinnest crescent stage, where the unlit parts of the moon become visible. This occurs when sunlight reflects off the Earth and gently illuminates the night side of the moon. This in turn is reflected back to us. This creates the effect of a ghostly glow in the unlit areas, giving it the illusion of a full moon even though it’s not in its full moon phase.
Earthshine typically occurs during the spring for a few days on either side of a new moon.So it’s not very It’s a new moon, but if you really want to see it, you can see it as close as possible.
new moon and solar eclipse
The relationship between solar eclipses and new moons is intertwined. Without a new moon, there will be no solar eclipse.
A solar eclipse occurs when the moon passes between the Earth and the sun. Block out all (total solar eclipse) or some (partial solar eclipse) of the sun’s light. With this adjustment, only This phenomenon occurs during the new moon phase, when the moon is directly between the Earth and the sun.
The next solar eclipse will occur on April 8, 2024, and the total solar eclipse will cross Mexico, the United States, and Canada. A partial solar eclipse will be visible in the westernmost parts of the UK and Ireland.
However, not all new moons cause solar eclipses. This is because the moon’s orbit is slightly different from the Earth’s orbit around the sun. There is a difference of about 5 degrees. This small difference is usually enough for the new moon to pass above or below the Sun without blocking it. In other words, no solar eclipse will occur.
What is a black moon?
The term “black moon” is used to describe the new moon, which is the equivalent of a blue moon. There are several different definitions of a black moon, but it usually refers to two new moons in one calendar month. This simply depends on the number of days in the month and how the calendar is determined.
Some people call a calendar month without a new moon a black moon. This can occur in his February, when there is no new moon about once every 19 years, due to the short length of the moon compared to the lunar cycle.
The next black moon (using the definition of two new moons in a month) will be on December 30, 2024 at 10:27 PM (GMT).
On February 3, 2024, NASA's Juno spacecraft made its second close approach to Io, the fifth and third largest of Jupiter's moons. Like the previous flyby on December 30, 2023, this second pass was approximately 1,500 kilometers (930 miles) away. During the twins' flyby, the spacecraft's JunoCam instrument returned stunning high-resolution images and raw data. The flyby is designed to provide new insights into how Io's volcanic engines work and whether a global magma ocean exists beneath the volcanic moon's rocky, mountainous surface. has been done.
The JunoCam instrument aboard NASA's Juno spacecraft imaged Io, the most geologically active object in the solar system, on February 3, 2024, from a distance of approximately 7,904 km (4,911 miles) . Image credit: NASA/SwRI/MSSS.
Io is the innermost of Jupiter's four Galilean moons and the fourth largest moon in the solar system.
Its diameter is about 3,630 km (2,556 miles), making it only slightly larger than our moon.
It is the only place in the solar system other than Earth that is known to have volcanoes spewing hot lava like those on Earth.
Io has over 400 active volcanoes, which are caused by tidal heating. This is the result of a gravitational tug of war between Jupiter's gravity and the small but precisely timed gravitational pulls from Europa and Ganymede.
The moon's yellow, white, orange, and red colors are produced by sulfur dioxide, frost on its surface, elemental sulfur, and various sulfur allotropes.
The volcano was first discovered on the island of Io in 1979, and since then studies using NASA's Galileo spacecraft and ground-based telescopes have shown that eruptions and lava fountains occur constantly, forming rivers and lakes of lava. Masu.
Only 13 large eruptions were observed between 1978 and 2006, in part because fewer astronomers were scanning the moon on a regular basis.
The JunoCam instrument aboard NASA's Juno spacecraft imaged Io on December 30, 2023, from a distance of approximately 5,857 km (3,639 miles). Image credit: NASA/SwRI/MSSS.
NASA's Juno spacecraft has been monitoring Io's volcanic activity from distances ranging from about 11,000 km (6,830 miles) to more than 100,000 km (62,100 miles), providing the first view of the moon's north and south poles .
On December 30, 2023, Juno came within approximately 1,500 km of Io's surface. The orbiter made her second close flyby of the Moon on February 3, 2024.
The second flyby mainly flew over Io's southern hemisphere, but previous flybys flew over Io's northern hemisphere.
Juno captured two plumes rising above Io's horizon on February 3, 2024. These plumes were emitted from two vents from one giant volcano, or from two volcanoes located close to each other. The JunoCam instrument photographed the plume from a distance of approximately 3,800 km (2,400 miles). Image credit: NASA / JPL-Caltech / SwRI / MSSS / Andrea Luck.
“We investigate the source of Io's massive volcanic activity, whether there is a magma ocean beneath its crust, and the importance of tidal forces from Jupiter that are relentlessly squeezing this beleaguered moon. doing.”
“There are active plumes, high mountain peaks with distinct shadows, and evidence of lava lakes, some of which look like islands.”
Starting in April 2024, Juno will conduct a series of occultation experiments that will use Juno's gravity science experiments to investigate the composition of Jupiter's upper atmosphere. This provides important information about the planet's shape and internal structure.
NASA/JPL-California Institute of Technology/Space Science I
Saturn's moon Mimas appears to have a vast global ocean beneath its icy shell, according to detailed measurements of its orbit. If other icy worlds have similar oceans, the number of planets that can support life could increase.
Mimas is the smallest of Saturn's seven major moons. For a long time, it was thought that most of it was composed of solid ice and rock, but in 2014 astronomers observed that the orbit around Saturn was unexpectedly wobbling, suggesting that this could only be explained by either a rugby ball-shaped nucleus or a liquid ocean.
Many astronomers rejected the ocean explanation, as the friction required to melt the ice would have caused visible marks on Mimas's surface. However, recent simulations suggest that this ocean may exist even without such traces.
Looking for more clues? Valerie Rainey Researchers from France's Paris Observatory analyzed observations of Mimas' orbit by NASA's Cassini spacecraft. They found that the orbit around Saturn has shifted by about 10 kilometers over 13 years.
According to the team's calculations, this orbital drift could only have been caused by an ice shell sliding over the ocean, or by wobbles from the physically impossible pancake-shaped core.
The moon's elliptical orbit and lack of surface markings also suggest that the ocean is about 30 kilometers deep and formed less than 25 million years ago. “It was very recent,” Rainey says. “We are more or less witnessing the birth of this global ocean.”
This recent activity could help explain not only the lack of traces on the surface, but also why the moon is so different from its neighbors. Enceladus has a similar shape and orbit to Mimas, and has a global ocean, but it also has a very active surface and giant spout. Rainey said the difference is simply a difference in time, and in a few million years Mimas' ice could melt and it could look similar to Enceladus.
“It would be surprising if that were true,” he says. William McKinnon at Washington University in St. Louis, Missouri. But he says there are still things that aren't perfectly aligned, such as the vast 80-mile-wide Herschel crater, which was formed by a giant impact. If Mimas' ice shell was truly only tens of kilometers deep, McKinnon said, we would have seen evidence of a distorted crater floor in the impact and aftermath. It's also unlikely, he says, that you'll be able to get a front-row seat at such a short and unique time in Mimas' long history. “I remain a Mimas ocean skeptic,” McKinnon says.
However, if Mimas has a hidden ocean, it suggests that other icy planets and moons in the solar system and elsewhere may have the same, expanding the possibility of life. “It's expanding our vision of what is and isn't a habitable world,” Rainey says. “Mimas teaches us that even a corpse that seems to have no life in it may someday come to life.”
A full moon low on the horizon is one of the most fascinating sights in the night sky. It is also one of the easiest astronomical phenomena to observe. You don't need any special equipment to see the full moon, and you don't need a star map to find it.
It's helpful to learn a little about the different craters on the moon. By observing the moon regularly, you can see how its characteristics change as the moon waxes and wanes.
Whether you're an experienced astronomer, a budding astrophotographer or someone with an interest in astrology, it's useful to know when the next full moon will be visible in the UK. For those who want to try their hand at moon photography, expert Pete Lawrence has put together a guide on how to take great photos of the moon. This guide is full of helpful (and practical!) tips and hints.
Discover more amazing views of the night sky with our beginner's guide to astronomy, and record natural fireworks on your calendar. All 2024 meteor showers are listed in our definitive guide.
When is the next full moon?
Next full moon is January 25, 2024, also known as the Wolf Moon. Other names for January's full moon include Moon After Yule, Ice Moon, and Old Moon.
A full moon is part of a lunar cycle that takes 29.53 days (29 days, 12 hours, 44 minutes, and 3 seconds) to complete. In other words, a full moon occurs every 29.53 days. Since this is less than one calendar month, you may see two full moons in one month, and that “extra” full moon is known as a “blue moon.”
During the Full Moon phase of the lunar cycle, the Moon, Earth, and Sun are aligned, with the Moon 180 degrees opposite the Sun. That's why during a full moon, the moon rises and the sun sets (and vice versa).
Full moon day in 2024
January 25th, 5:54pm: wolf moon
February 24th, 12:30pm: snow moon
March 25th, 7am: worm moon
April 23rd, 11:49pm: pink moon
May 23rd, 1:53pm: flower moon
June 22nd 1:08am: strawberry moon
July 21st 10:17am: back moon
August 19th, 6:26pm: sturgeon moon
September 18th, 2:34am: corn moon
October 17th 11:25am: hunter's moon
November 15th, 9:28pm: beaver moon
December 15th 9:02am: cold moon
When will the 2024 supermoon occur?
Supermoon is an unofficial name that has become increasingly popular in recent years. This refers to a full moon that appears larger and brighter than other full moons that year.
Because the Moon orbits the Earth in an elliptical shape, its distance from us changes throughout the year. When the moon is closest to us, this is called lunar perigee. When it is farthest from us, it is known as the moon's apogee.
When perigee occurs near a full moon, the moon appears larger and brighter, creating a supermoon. Typically, this is when the Moon is about 360,000 km or less from us, but this is not always the case.
2024 supermoon dates
sturgeon supermoon
August 19th: 361,969 kilometers (224,917 miles)
corn supermoon
September 18th: 357,485 kilometers (222,131 miles)
hunter's supermoon
October 17th: 357,363 kilometers (222,055 miles)
beaver supermoon
November 15th: 361,866 kilometers (224,853 miles)
What is the lunar cycle?
The moon appears to change shape throughout the lunar cycle.
new moon
waxing crescent moon
1st quarter
The waxing Gibbs moon
full moon
The fading gibbous moon
3rd quarter
waning crescent moon
Another new moon.
We can see the moon because it reflects light from the sun. As it orbits the Earth, the amount of light reflected back to us changes. When the moon passes between the sun and the earth, light can no longer be reflected back to us and a new moon occurs.
A full moon occurs when the Earth is between the sun and the moon, when the moon's surface is completely illuminated by the sun. During those hours, only part of the moon can reflect light back to Earth.
If the moon orbits the Earth in the same plane that the Earth orbits the sun, the moon will block light from the sun every time a new moon occurs.
However, this does not happen because the Moon orbits at an angle of about 5 degrees compared to the Earth's orbit of the Sun. When the Moon passes through the Earth's orbit and her three celestial bodies, the Earth, Moon, and Sun, line up.
This is called Shijiji. A solar eclipse occurs when a lunation occurs during a new moon, and a lunar eclipse occurs when a lunation occurs during a full moon.
How can I photograph the moon at night?
To photograph the moon with your phone, you may need to play around with your camera settings. No flash, lower ISO and set focus to 100.
If you don't know how to make these changes, use the Night Photography app ( night cap– Available at app store£2.99) gives you more control over your camera settings than the regular camera app.
If you're using a digital camera, start with an aperture between f/11 and f/16 and a shutter speed between 1/60 and 1/125 seconds. A tripod can help reduce shaking in low-light situations when you need to hold the camera still and keep the shutter open a little longer.
To get the best photos of the moon, you need to be creative with your shots so that you can fit the moon in the frame depending on the surrounding scenery. There is a lot of software available to help you plan where you will see the moon or anything else in the night sky ( moon locator App – available at android device, free).
To find more software worthy of your home screen, check out our guide to the best astronomy apps.
Moon photography is a great way to get started with astrophotography. The moon's appearance changes throughout the month. Not only the shape changes, but also the craters and the moon. Similarly, shadows create tricks of light that make the moon a brilliant subject.
You don't need much in terms of equipment. If you have a smartphone and a tripod, you can take good photos.
Related: Read Pete Lawrence's expert guide on how to photograph the moon. It features beginner, intermediate, and advanced projects that you can try at home.
Does the moon rotate?
Yes, the moon rotates. But it is tidally locked and rotates in sync with Earth's orbit, so for every Earth orbit he makes one revolution.
This means that the same side is always facing us as we move around the Earth. This is why we have the term “dark side of the moon,” which refers to the side we never see. In fact, that side of the moon receives as much sunlight as the side we see, so the correct term is “far side of the moon.”
What is a Blood Moon? How can I see it?
“During a total lunar eclipse, the moon turns red because Earth's atmosphere scatters blue light and only lets red light through. This is called a blood moon,” says Abigail Beale.
The next total lunar eclipse visible from the UK will be on 14 March 2025 (UK, Europe, Africa, the Americas, East Asia, Australia).
We have some time before we wait for the next Blood Moon. Below are the dates of the next total lunar eclipse that will result in a blood moon.
March 14, 2025:UK, Europe, Africa, America, East Asia, Australia
September 7, 2025:UK, Europe, Asia, Australia
March 3, 2026: America, Asia, Australia
December 31, 2028:UK, Europe, Asia, Australia, Western US, Canada
Japan's Smart Lander for Lunar Exploration (SLIM) has landed on the moon. Although the spacecraft is not operating perfectly, the successful landing follows a series of recent failed moon landings by governments and private spaceflight companies, and remains encouraging for international efforts to explore the moon. . With this landing, Japan will become the fifth country to land on the moon, following the United States, Soviet Union, China, and India.
The Japan Aerospace Exploration Agency (JAXA) launched SLIM in September 2023, and the spacecraft took a long orbit to the moon, circling the Earth several times to conserve fuel. It has been orbiting the moon since December, taking images of the surface and preparing for landing.
The January 19 touchdown marked the first use of a technology engineers dubbed “smart eye,” which allows SLIM to aim its landing spot with extreme precision. SLIM determined its position by comparing images from its onboard camera with data from other spacecraft orbiting the moon, then autonomously navigated to a landing site on the slopes of Sioli Crater. JAXA officials are continuing to analyze how well the targeting protocol worked.
Initial signals from SLIM suggest that the solar panels do not appear to be operational, so the spacecraft is operating on battery power for now. If spacecraft operators are unable to figure out what's wrong with the solar cells and get them working, SLIM's scientific capabilities could be hampered and its lifespan significantly shortened. According to JAXA officials, battery life is expected to be only a few hours. It's possible the spacecraft will regain solar power, but for now JAXA's priority is to return as much data as possible to Earth before its batteries run out.
As SLIM descended to the lunar surface, two small rovers, each carrying a small payload of scientific instruments, also descended. One of them is designed to bounce rather than roll on wheels, and the other is a tennis ball. He was designed by toy manufacturers to roll on the moon, with a sphere slightly smaller than a ball. The spacecraft appears to be functioning normally.
Spacecraft landing sites are potentially important. Previous observations suggest that material may have come from inside the moon during the impact that formed the crater. SLIM's scientific instruments can study these minerals to learn about the formation and evolution of the Moon. A successful landing and the scientific data collected will provide useful data for the many spacecraft scheduled to travel to the moon from around the world in the coming years.
Artist's thoughts on SLIM after landing on the moon
JAXA
Japan is preparing for its first moon landing. The Smart Lunar Survey Lander (SLIM) is scheduled to land on the lunar surface on January 19th. If all goes well, Japan will become the fifth country to land a probe on the moon, following the United States, Soviet Union, China and India.
SLIM launched in September 2023 and took a long, narrow path to the moon, making a steep descent to conserve fuel. It entered lunar orbit in December and has since taken images of the lunar surface and slowly lowered its altitude in preparation for landing.
This spacecraft's landing technique is so precise that it has been nicknamed the “Moon Sniper.” It is designed to match images from its onboard camera with data from other lunar rovers to determine its location and autonomously navigate to a precise landing site. “[It] “We can expect 20 minutes of breathless, numbing fear,” said Kenji Kushiki, one of the mission managers at the Japan Aerospace Exploration Agency (JAXA). in a statement.
If successful, future missions will be equipped to land exactly where they want to land, rather than within a few dozen square kilometers of their desired spot, as is the case today. “Lunar orbiting satellites… have provided a large amount of high-resolution observation data of the lunar surface,” Kushiki said. “Thus, interest in lunar science and resource exploration has shifted from 'somewhere on the moon's surface' to 'that rock next to this particular crater.'”
When the spacecraft lands, it releases a pair of probes with new and strange ways to travel across the moon's surface. Lunar Expedition Vehicle-1 (LEV-1) is designed to fly around rather than roam on wheels like traditional rovers. LEV-2 is a sphere slightly smaller than a tennis ball that was designed by toy manufacturers to roll on the ground. take a picture. The lander itself also carries scientific instruments to survey the area around the crater that will be the target of the landing.
The landing is part of a large-scale international effort to explore the moon. India's Chandrayaan-3 lander reached the moon's surface in August 2023, but there were a series of failures. A lander sent by Japan's iSpace company crashed last April, Russia's Luna 25 had a similar accident in August, and more recently the US crashed. Astrobotic's Peregrine lander suffered a fuel leak and failed to reach the moon. If this mission is successful, it could be the moment when lunar exploration gets back on track.
NASA/JPL-California Institute of Technology/Stephane Le Mouelik, Virginia Pasek
Saturn’s moon Titan is home to strange “magical islands” that appear and disappear over hours to weeks. These so-called islands are actually porous, sponge-like masses of snow that can slowly fill with liquid before sinking.
Titan’s thick atmosphere is filled with complex organic molecules that can clump together and fall to the moon’s surface like snow. Sintin Yu Researchers at the University of Texas at San Antonio thought that snow could be the cause of the magical islands. To test their idea, they took advantage of what we know about these atmospheric compounds and how they are expected to interact with Titan’s oceans.
Titan’s liquid is methane, not water, so any solids on the surface of these oceans would normally be expected to sink quickly. Water molecules tend to stick together and displace other substances, but methane easily sticks to other molecules, so the surface tension of a pool of liquid methane is very low.
“Water molecules just love themselves by excluding certain molecules,” he says. michael marasca from NASA’s Jet Propulsion Laboratory in California was not involved in the study. “But if you put methane on the same surface, it’ll start crawling all over the place.” That means Titan’s methane oceans and lakes should immediately swallow up any solids that are expected to float. It means that.
But that clearly won’t happen on the magical island, which appeared as a temporary bright spot in observations from the Cassini spacecraft. “For us to see magical islands, they cannot float briefly and then immediately sink,” Yu said in the paper. statement. “You have to stay afloat for a while, but not forever.” Researchers have found a solution to this problem. When large amounts of snow accumulate on the coast, they can form sponge-like, porous ice. Once these porous “icebergs” separated from the land, they could float in Titan’s oceans for long enough to rival Cassini’s observations. The researchers calculated that this would work if the sponge-like structure contained enough free space (at least about 25 to 50 percent, depending on the exact composition of the ice).
However, this does not mean that these mysterious islands are definitely porous icebergs. “We’re narrowing down different scenarios for the magical island, but we don’t know the answer yet,” Malasca says. Other possible explanations include nitrogen gas bubbles, waves caused by wind or solid ocean deposits. However, this provides evidence that Titan’s temporary islands may actually be suspended matter from this strange world’s atmosphere.
NASA/JPL-California Institute of Technology/Stephane Le Mouelik, Virginia Pasek
Saturn’s moon Titan is home to strange “magical islands” that appear and disappear over hours to weeks. These so-called islands are actually porous, sponge-like masses of snow that can slowly fill with liquid before sinking.
Titan’s thick atmosphere is filled with complex organic molecules that can clump together and fall to the moon’s surface like snow. Sintin Yu Researchers at the University of Texas at San Antonio thought that snow could be the cause of the magical islands. To test their idea, they took advantage of what we know about these atmospheric compounds and how they are expected to interact with Titan’s oceans.
Titan’s liquid is methane, not water, so any solids on the surface of these oceans would normally be expected to sink quickly. Water molecules tend to stick together and displace other substances, but methane easily sticks to other molecules, so the surface tension of a pool of liquid methane is very low.
“Water molecules just love themselves by excluding certain molecules,” he says. michael marasca from NASA’s Jet Propulsion Laboratory in California was not involved in the study. “But if you put methane on the same surface, it will start crawling all over the place.” That means Titan’s methane oceans and lakes should immediately swallow up any solids that are expected to float. It means that.
But that clearly won’t happen on the magical island, which appeared as a temporary bright spot in observations from the Cassini spacecraft. “For us to see magical islands, they cannot float briefly and then immediately sink,” Yu said in the paper. statement. “You have to stay afloat for a while, but not forever.”
Researchers have found a solution to this problem. When large amounts of snow accumulate on the coast, they can form sponge-like, porous ice. Once these porous “icebergs” separated from the land, they could float in Titan’s oceans for long enough to rival Cassini’s observations. The researchers calculated that this would work if the sponge-like structure contained enough free space (at least about 25 to 50 percent, depending on the exact composition of the ice).
However, this does not mean that these mysterious islands are definitely porous icebergs. “We’re narrowing down different scenarios for the magical island, but we don’t know the answer yet,” Malasca says. Other possible explanations include nitrogen gas bubbles, waves caused by wind or solid ocean deposits. However, this provides evidence that Titan’s temporary islands may actually be suspended matter from this strange world’s atmosphere.
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