New measurements reveal that 66% of Mars' argon has disappeared from its thin atmosphere since formation, leading to huge climate changes. The research suggests that Mars once had a thicker atmosphere composed mainly of carbon dioxide, which was largely lost due to solar wind bombardment.
The study found that most of the Martian gas has been lost to space due to solar wind and radiation stripping, altering the planet's climate and habitability. The loss of argon and CO2 indicates that the atmosphere was once warm enough to support liquid water and life.
Researchers propose that debris from an asteroid impact could have formed Mars' rings, which would then break apart and re-form into moons. The model suggests that this cycle may repeat, potentially explaining sedimentary deposits found on Mars.
New NASA research on Mars volcano Arsia Mons suggests its peak volcanic activity occurred around 150 million years ago, similar to the time of Earth's Cretaceous-Paleogene extinction event that led to the demise of dinosaurs. The study provides valuable insights into the Red Planet's history and interior structure.
Researchers discovered that a mineral found in Martian meteorites could indicate a more water-rich history for the Red Planet. Synthetic whitlockite samples were subjected to shock experiments and X-ray studies, revealing partial conversion to merrillite, which is commonly found in Martian meteorites.
Researchers analyzed Lake Towuti sediment using visible-near infrared spectroscopy and found distinct variations in clay mineralogy over the past 40,000 years. This technique can help reconstruct ancient Martian climate history.
Researchers at Utah State University are part of a NASA project to develop technology for growing food and producing necessities on Mars. The team will focus on nitrogen fixation using bacteria and exploring the challenges of food production in a closed system.
Researchers at LSU have found evidence of a complex mantle beneath the Elysium volcanic province on Mars, with geochemical changes suggesting primary magmatic processes. The study's findings have significant implications for understanding Mars' geological history and potential hazards for future human missions.
Researchers from Trinity College Dublin have identified a Martian valley with evidence of recent flooding, indicating water may have been present near Mars' equator in the not-too-distant past. This finding makes this location a potential geological target for detecting past life forms on the Red Planet.
The Gerontological Society of America (GSA) is offering a $50,000 grant to support research into the effects of companion animals on healthy aging in humans. The grant aims to advance the study of human-animal interaction's impact on older adults and their caregivers.
A recent study published in PNAS reveals that Mars' primitive atmosphere had a low CO2 level, making it inhospitable for the formation of liquid water lakes. This finding contradicts previous assumptions and suggests that the planet's climate may have been colder than previously thought.
A Martian meteorite provides clues to the evolution of Mars, with evidence suggesting that some of the longest-lived volcanoes in the solar system are located on the Red Planet. The research offers new insights into the history of volcanic activity on Mars and confirms at least 2 billion years of volcanic activity.
Researchers suggest early Mars was warmed by greenhouse effects from methane, carbon dioxide, and hydrogen. This could have supported liquid water on the surface, increasing the chances of finding life. The study's findings provide new insights into Mars' climate and its potential for hosting life.
Scientists have developed a new instrument capable of detecting life with unprecedented sensitivity, potentially uncovering signs of life on Mars and other planetary bodies. The method uses capillary electrophoresis to analyze soil or ice samples for specific amino acids that could serve as indicators of biological activity.
New research on Mars suggests that finger-like rock structures could be evidence of ancient microbes, potentially harboring past life. Thousands of geese have died due to toxic waters in Montana's Berkeley Pit, highlighting the spread of heavy metals and acid into groundwater.
For the first time, boron has been identified on the surface of Mars, indicating potential for long-term habitable groundwater in the ancient past. The discovery was made using NASA's Curiosity rover's Chemistry and Camera instrument.
Researchers presented insights from the Curiosity rover's study of Mount Sharp on Mars, which helps reconstruct the geological history of the area. Additionally, they developed a method to distinguish between natural and manmade earthquakes using seismic wave characteristics. Furthermore, scientists observed gamma-ray bursts triggered ...
A team of planetary scientists suggests that dramatic climate cycles on early Mars could have created the planet's deep canyons and extensive valley networks. The researchers propose a glacier-covered Mars with long warm periods lasting up to 10 million years, producing enough water to form these features.
A Martian ice deposit, Utopia Planitia, contains approximately as much water as Lake Superior, spanning over 2,050 miles in diameter. The deposit is estimated to be around 260-560 feet thick, consisting of 50-85% water ice.
New evidence from meteorites on Mars indicates a lasting drought on the planet, making it difficult for life to exist today. The study calculates a chemical weathering rate that shows rust formation takes thousands of times longer on Mars than in driest deserts on Earth.
A University of Texas at Austin-led study identifies funnel-shaped depressions on Mars with characteristics suitable for microbial life, including water, heat, and nutrients. The discoveries were made in the Hellas basin crater, where researchers believe volcanic or impact events may have created an environment conducive to life.
A new instrument prototype, BILI, uses fluorescence-based lidar to search for organic bio-signatures on Mars and other targets in the solar system. The instrument can scan terrain from a distance of several hundred meters, detecting small levels of complex organic materials in real-time.
The MAVEN mission provides unprecedented detail on hydrogen escape from Mars' upper atmosphere, revealing a dramatic variation in loss rates throughout the year. The research suggests that water escape is not a steady leak but rather an episodic flow influenced by seasonal and solar activity.
Recent findings from the 1976 Viking mission and ongoing research suggest that microbial life on Mars is a possibility worth exploring. The presence of water, complex organic molecules, and methane in the Martian environment support a biological explanation for the results of the Viking Labeled Release experiment.
Researchers propose new model of megaflood-carved landscapes, suggesting that deep canyons can be formed in bedrock by significantly less water than previously thought. This study applies numerical flood models to the 'channeled scablands' in eastern Washington State and Mars, revealing that channels were likely formed by flood dischar...
A new study by UCI researchers found that prolonged spaceflight exposure to galactic cosmic rays can cause significant long-term brain damage in rodents, leading to cognitive impairments and dementia. The study raises concerns about the potential central nervous system complications astronauts may face during extended Mars missions.
Phobos' unique orbit and weak interior structure make it prone to tidal stresses that cause fracturing and linear grooves. Researchers found anomalous grooves are caused by impacts, with debris recaptured and falling back onto the surface in a linear chain.
A new study published in Geology reveals extensive fossilized river systems on Mars' Arabia Terra plain, indicating a warm and wet climate around 4 billion years ago. This discovery supports the idea that Mars was once more favorable for life than its current cold and dry environment.
MIT scientists developed a technique to interpret Raman spectra, identifying samples with high hydrogen-to-carbon ratios that may preserve ancient microbial life. The new method enables the 2020 Mars rover to select ideal samples for further study, potentially revealing signs of past life on Mars.
Researchers propose deep underground rocks excavated by meteorite blasts as a promising place to find organic compounds indicative of past or present life on Mars. However, they found that some types of organic compounds are destroyed by impact pressures, while others undergo chemical changes but remain resistant.
A new study published in Meteoritics & Planetary Science reveals that mineral veins on Mars were formed by the evaporation of ancient lakes. The research, conducted by scientists from The Open University and University of Leicester, found that the fluids present in Martian Yellowknife Bay were habitable by Earth standards.
Researchers have discovered 'wind-drag ripples' on Mars, which are similar to underwater ripples in shape and spacing. These unique formations provide a way to measure global changes in the planet's atmospheric density over time.
The partnership aims to foster dialogue and collaboration among scientists to address global challenges such as energy, climate change, food security, and poverty. Mars will continue to host young scientist events and panel discussions to bring together experts from diverse fields.
The discovery of high levels of manganese oxides in Martian rocks suggests that the Red Planet may have had a more Earth-like atmosphere in the past. This finding is significant because it could indicate that higher levels of atmospheric oxygen once existed on Mars.
Researchers identified and recorded over 50 species of fungi, algae, cyanobacteria, lichens, and vascular plants at the Mars Desert Research Station. The study provides a first-line reference for identifying these organisms and serves as a starting point for future floristic and ecological work.
A team of researchers led by Sridhar Mahadevan is applying deep learning methods to analyze large amounts of scientific data from Mars. They hope to develop a practical tool for handling vast amounts of data created by various scientific instruments, including the NASA Curiosity rover.
Researchers have confirmed that Mars has undergone multiple rounds of climate change using radar measurements of its polar ice caps. The study reveals the planet's current retreat from an ice age began approximately 370,000 years ago and is still ongoing.
Using radar data from NASA's Mars Reconnaissance Orbiter, a team of researchers found evidence of an accelerated accumulation rate of ice in the Martian polar cap. The volume and thickness of ice match model predictions, providing insights into Mars' climate change history.
The image reveals details as small as 20 to 30 miles across, showcasing the planet's polar caps, clouds, and vivid rust-colored landscape. The Hubble view also highlights ancient features such as Syrtis Major Planitia and Hellas Planitia basin.
Scientists found evidence of two mega-tsunamis on Mars, triggered by meteorite impacts, which formed cold salty oceans conducive to sustaining life. The research reveals ancient ocean characteristics, including icy lobes with briny waters, providing a potential refuge for life in extreme environments.
A Penn State geoscientist is joining the NASA Mars rover team to investigate whether environmental conditions on Mars were ever favorable for microbial life. He will analyze Martian rocks and compare them to Earth rocks to search for signs of life, including sulfur and organic matter.
Researchers discover microbes creating tubular microtunnels in basaltic volcanic glass on Earth, expanding our understanding of subsurface microbial activity. This finding also suggests that similar features may exist on Mars, potentially near the surface, which could aid future Mars missions.
Scientists have used a revolutionary image stacking and matching technique to reveal objects on Mars with a resolution up to five times greater than previously achieved. The Super-Resolution Restoration (SRR) method has huge potential to improve knowledge of a planet's surface from multiple remotely sensed images.
A new University of Colorado Boulder study suggests that ancient Martian bombardments created regions with hydrothermal systems similar to those in Yellowstone National Park. These systems may have made early Mars habitable for a time.
Researchers aim to learn about changes in Martian-like sand dunes' grain size, chemical composition, and shape. They seek evidence of microbial organisms in similar environments as Earth, which could provide clues about Mars' past habitability.
Researchers have discovered a complex 4-step process for gypsum formation, opening the way to more energy-efficient production of Plaster of Paris. This breakthrough could also aid in understanding past water availability on Mars and other planets.
Researchers found that wind carved massive mounds of more than a mile high on Mars over billions of years. The study linked the formation of these mounds to climate change on Mars, with sedimentary rocks forming at the base and wind-deposited sediments creating the mound's shape.
The new gravity map provides a detailed view of Mars' interior, revealing a liquid outer core and massive seasonal precipitation. The improved resolution helps understand the formation of specific regions and confirms previous indications about Martian tides.
The comet's passage threw Mars' magnetic field into chaos, with effects seen in real-time during the flyby and even hours after. The findings suggest a temporary surge in gas escaping from Mars' upper atmosphere, similar to a strong solar storm.
The MAVEN mission collected data from a close approach to Martian moon Phobos, providing spectral images of the moon's surface. The observations will help scientists understand the moon's origin, comparing it to asteroids and meteorites.
European scientists sent Antarctic fungi to the International Space Station for 18 months in conditions similar to Mars. More than 60% of their cells remained intact with stable DNA, indicating their ability to survive harsh Martian environments. Lichens from Spain and Austria also showed resilience under simulated Martian conditions.
Phobos will likely break apart and form a ring around Mars due to tidal forces. The debris from Phobos will continue to orbit Mars for millions of years before eventually colliding with the planet.
A new study found that Mercury is being pelted by ancient comet dust, impacting its tenuous atmosphere and surface boundary exosphere. The researchers discovered a cometary dust stream from Comet Encke that explains the timing of calcium emission peaks in the planet's exosphere.
NASA scientists have found that Phobos' surface features long, shallow grooves, likely early signs of structural failure. The moon's interior may be a rubble pile with a powdery regolith layer, making it prone to stress fractures and eventual destruction.
A recent study has successfully detected dust devils using a seismometer in California, which will help NASA's InSight mission on Mars measure dust devils' impact on the atmosphere. The findings also provide insights into Martian climate and the composition of rocks and dust.
The MAVEN mission has revealed enhanced escape rates of ions during solar bursts, hinting at substantial atmospheric loss in early Martian history. The study also found a large vertical temperature gradient and mixing of gases near the thermosphere and ionosphere.
The Martian atmosphere is losing gas to space via stripping by the solar wind, with erosion rates increasing significantly during solar storms. Researchers have determined that almost 75% of escaping ions come from Mars' tail region.
NASA's MAVEN mission has determined that Mars is losing gas to space via stripping by the solar wind, a process that may have contributed to the planet's dry climate. The research suggests that powerful solar storms can accelerate this process, potentially playing a significant role in changing Mars' climate over billions of years.
Planetary scientist Shoshanna Cole discovered signs of acid fog on Mars, which formed when acidic vapors dissolved minerals and created gel-like cement. The phenomenon was observed in the Watchtower Class outcrops on Husband Hill, indicating a change in the environment billions of years ago.
Researchers used a new process to model planetary formation, showing that rocky planets grow from pebbles, resulting in the massive differences between Earth and Mars. The VSPA model explains why Mars is smaller than expected by suggesting that aerodynamic drag prevents pebbles from colliding with objects near the Red Planet.