Articles tagged with Mars
Researchers found that lava flows, not water, carved the massive Noctis Labyrinthus and Valles Marineris canyons on Mars. The study suggests that there was less water on Mars than previously thought, making life on the planet less likely.
Recent NASA studies found that spore-forming bacteria like Bacillus pumilus can survive in space for up to 18 months, surviving harsh conditions including UV radiation and extreme temperatures. These hardy organisms may be able to carry life between planets via lithopanspermia.
Researchers analyzed 40 Martian meteorites to understand the evolution of Mars' atmosphere, shedding light on whether life existed or could have existed on the red planet. The study found that the atmospheres of Mars and Earth diverged early in the solar system's history, with sulfur playing a key role in shaping the Martian environment.
A new analysis by ASU scientist Steve Ruff suggests that Lake Gusev on Mars once held a lake, with evidence of low-temperature surface waters introducing carbonates into rocks. The discovery sheds light on the crater's geological history and potential astrobiological significance.
NASA's Hubble Space Telescope captured an image of Mars-bound comet Siding Spring, revealing two jets of dust emanating from the nucleus. This observation will help astronomers determine the direction of the nucleus's pole and axis of rotation.
Researchers have designed a vacuum chamber to mimic Martian conditions, testing instruments and addressing challenges like dust. The goal is to better understand the habitability of other planets.
Researchers have uncovered new seismic data for the Slate Range in California, revealing a change in faulting style around four million years ago. In another study, scientists linked zircon ages to oxygen isotopic correlations between two tephra deposits in the southwestern United States.
IceBridge began its 2014 Arctic campaign with two sea ice surveys north of Greenland, focusing on changes in sea ice elevation and thickness. The mission aims to collect more data, including cross-basin surveys over the Arctic Ocean and flights over the Beaufort and Chukchi seas.
Researchers found distinct spectral signatures of ferric and ferrous minerals at most RSL sites, suggesting a possible connection to water. However, the lack of water-related absorptions rules out hydrated salts as a dominant phase on RSL slopes.
Lorena Moscardelli presents a terrestrial, deep-water analogy to support the existence of an ancient Martian ocean. She documents boulder-size rocks on Mars' northern plains that are similar to blocks transported by subaqueous mass-transport events in Earth's deep water environments.
The MAVEN spacecraft has completed its initial checkout and is now ready to carry out its full science mission. The Mars Atmosphere and Volatile Evolution (MAVEN) mission aims to determine the role of gas escape in changing Mars' climate throughout its history.
The CSIRO Australia-led research reveals the oldest minerals ever analyzed by NASA's Mars Opportunity Rover show evidence of liquid water on Mars around 4 billion years ago. The discovery suggests that past water activity may have created livable mud, increasing the chances of life on Mars.
The Opportunity rover has discovered evidence of conditions that support the chemistry of life in Mars' past, earning a spot in Science magazine. The 10-year-old rover explored Martian geology and environmental processes, searching for signs of habitability and life.
Researchers suggest that megafloods created the unique amphitheater-headed canyons in Idaho and on Mars, replacing traditional theories of groundwater sapping. The team analyzed rock samples and scour marks to support their claims, pointing to much larger water discharges and shorter flow durations.
Researchers at California Institute of Technology successfully dated a Martian rock using the Sample Analysis on Mars instrument, determining its age to be about 3.86-4.56 billion years old. This experiment provides valuable insights into Mars' geologic history and aids in searching for evidence of ancient life on the planet.
Researchers from NASA's Curiosity rover mission found evidence of a calm and fresh-watered lake on Mars that may have supported simple microbial life. The team believes the lake may have lasted for tens or hundreds of thousands of years, providing perfect conditions for chemolithoautotrophs to thrive.
The Radiation Assessment Detector measured radiation on Mars' surface, revealing an average GCR dose equivalent rate of 0.67 millisieverts per day. The findings also show that most mission radiation exposure will occur during outbound and return travel, posing a challenge for future human exploration.
Three mass spectrometers from NASA's Goddard Space Flight Center conducted simultaneous experiments on the moon and Mars to analyze atmospheric and rock samples. This milestone demonstrates the value of these instruments for understanding planetary environments.
A team of researchers suggests that molecular hydrogen, in addition to carbon dioxide and water, could have created a greenhouse effect on Mars 3.8 billion years ago, raising temperatures high enough for liquid water to flow.
A Florida State University scientist has discovered a 4.4 billion-year-old Martian meteorite that may be the first recognized example of ancient Martian crust. The analysis reveals information about the origin and age of Mars' crust, confirming that the planet did not experience a giant impact that melted it in its early history.
The NASA MAVEN mission has launched successfully, embarking on a 10-month journey to the Red Planet. The spacecraft will arrive at Mars in September 2014 and begin collecting science data after completing a check-out period.
Scientists have found that Mars can also stir up asteroid surfaces, refreshing them over time. The research suggests that the Red Planet plays a key role in altering the chemical nature of asteroids' surfaces, changing their reddish hue.
Researchers found rich deposits of feldspar, a mineral common in granite, in an ancient Martian volcano. The discovery suggests prolonged magmatic activity on Mars, leading to the formation of granite-like rocks, challenging previous assumptions about Martian geology.
A team of scientists found evidence for bromides converting to reactive gases in Martian soil, leading to variable sulfur-chlorine ratios. This could alter existing models of aqueous processes and oxidants on Mars, affecting the search for life. The study also suggests that volatilized halogens may have impacted subsurface distribution.
A new study suggests that Phobos' surface contains tons of Martian debris, including dust, soil, and rock blown off the Martian surface by large projectile impacts. This finding could enable a sample-return mission to Mars to be flown as part of a single mission, with the Russian space agency planning to launch its second attempt in 2020.
The Curiosity rover's direct measurement of argon gas on Mars pinpoints the origins of Martian meteorites, shedding light on atmospheric loss. The discovery provides a clear signature of the planet's history and supports previous findings of atmospheric decline on Mars.
A team of scientists led by NAU's Nadine Barlow found a new type of impact crater on Mars, known as Low-Aspect-Ratio Layered Ejecta (LARLE) craters. These craters feature a thin, uniform outer deposit that extends far beyond the normal ejecta blanket.
Researchers claim NASA portrayed astronauts as pioneering cowboys in its images of the moon landing, promising a future that never materialized. The study analyzed over 400 memory cards from visitors to the National Space Centre and found half contained a reference to the moon landing as a glimpse into a future that never came true.
Researchers at the WALTHAM Centre for Pet Nutrition found that overweight dogs in middle age have a shorter life expectancy, with some breeds facing significant reductions. The study examined data from over 5,000 dogs and found that being overweight can have long-term consequences for a dog's lifespan.
Research shows lactating cats increase total calorie consumption and alter diet composition to meet physiological requirements. Cats with large litters select foods to reduce protein and carbohydrate intake, increasing fat consumption.
Researchers analyzing Martian rocks using Curiosity rover's chemical instruments found a pyramid-shaped volcanic rock called a mugearite, similar to those on Earth. The discovery suggests the presence of water deep below Mars' surface, a crucial ingredient for life.
The Curiosity rover's Sample Analysis at Mars (SAM) instrument suite found 2% water in Martian surface soil, indicating a significant resource for the planet. The analysis also revealed perchlorate and chlorate compounds, suggesting they could be distributed globally.
The Curiosity Rover discovered a diverse range of soils and sediments on Mars, revealing small amounts of water in the dust and fine soil. The findings suggest that water may be present in the Martian environment, potentially providing a source for future astronauts.
The NASA Mars rover Curiosity has found water in its first sample of Martian soil, with fine materials containing several percent water by weight. The discovery sheds light on the planet's surface composition and implications for future research.
A team of MSL scientists analyzed a martian rock called Jake_M, which is highly enriched in sodium and potassium, making it chemically alkaline. The analysis suggests that parts of Mars may be more like Earth than previously thought, with the rock possibly forming from partial melting of rocks deep inside the planet.
A new camera system, TextureCam, allows future Mars rovers to prioritize their scientific objectives and explore more distant worlds. The system uses machine learning algorithms to recognize rocks, sand, and sky in photos, enabling autonomous decision-making and increased autonomy.
Researchers from Southwest Research Institute discovered frozen water can melt to form debris flows on Alaskan sand dunes, mirroring Martian 'dark dune spot' seepage flows. These findings provide valuable analogies for understanding Martian processes and their potential impact on future Mars missions.
A team of MIT and Washington University researchers developed a terramechanics model called Artemis, simulating rover mobility over various soil types and terrain. The model predicts safest paths for rovers and can help mission planners avoid sand traps like the Spirit rover.
New research presents evidence suggesting that life may have originated on Mars and was brought to Earth via a Martian meteorite. The study tackles two paradoxes related to the origin of life on Earth, including the 'tar paradox' and the difficulty in starting life due to water coverage.
Professor Harry 'Hap' McSween, a leading expert on Mars composition and meteorites, will receive the Whipple Award for his pioneering studies of Martian geology. The award recognizes his significant contributions to the field of planetary science.
Researchers at Brown University propose that double-layered ejecta craters on Mars were formed when impacts blasted through ancient glacial ice, creating a two-layered appearance. The model explains distinct features of the craters, including radial striations and their locations at middle or high latitudes.
A Western University-led team of geologists has solved the long-standing puzzle of the Martian meteorite age by directing energy beams at tiny crystals found in a Martian meteorite. The team discovered that the most common group of meteorites from Mars is almost 4 billion years younger than previously believed.
Researchers at Brown University found evidence of orographic precipitation causing water-carved valleys on Mars, indicating ancient snowfall. The study's findings shed light on early Martian climate and atmosphere.
Studies show that human-animal interaction boosts social skills in adolescents, provides mental health support for people with dementia, and improves social relationships and physical activity among pet owners. Positive effects are attributed to structured interactions with animals.
The Neutral Gas and Ion Mass Spectrometer (NGIMS) instrument on the MAVEN spacecraft will collect data on charged gas particles in Mars' upper atmosphere, helping scientists understand how the planet lost its majority of atmosphere. The data will also be used to build models of the Martian atmosphere billions of years ago.
The Curiosity rover has made high-precision measurements of Mars' atmosphere, revealing it was much thicker in the past. Heavy isotopes of carbon and oxygen were more abundant, indicating a warmer and wetter climate.
Two university researchers argue that NASA's Planetary Protection protocols are overly restrictive and expensive, making missions to search for life on Mars unviable. They suggest revising policies to prioritize impact on planetary exploration while minimizing costs.
Scientists conducted a simulated Mars expedition in the Atacama Desert to test instruments for the 2020 mission. The dry run aimed to identify potential issues and improve performance, ensuring the success of future missions.
Scientists found that Martian meteorites and surface rocks have similar origins in the planet's deep interior, but surface rocks came from a more oxygen-rich environment. The researchers believe this was caused by recycling of oxygen-rich materials into the interior through subduction.
Researchers found pebbles and sand with roundness similar to river stones, suggesting a river once flowed on Mars. The discovery provides strong evidence for the planet's past habitability.
The Mars Curiosity Rover has discovered strong evidence of flowing water on Mars, with rocks showing characteristics similar to those formed by rivers and streams. The findings suggest a warmer and wetter past environment on the planet, which may have supported life.
A recent study published in Science provides insight into radiation hazards for deep space missions, including those to Mars. The research measures radiation exposure on the Curiosity rover's journey to and from Mars, revealing a significant risk to astronauts, with doses potentially exceeding career limits.
Researchers have found rounded pebbles on Mars that indicate flowing water, with sizes between 4-40mm. The findings suggest a prolonged warm period with flowing streams and a denser atmosphere, potentially making Mars habitable for microbial life.
The Southwest Research Institute-led Radiation Assessment Detector made detailed measurements of the energetic particle radiation environment inside the spacecraft, providing important insights for future human missions to Mars. The data show an average galactic cosmic ray dose equivalent rate of 1.8 milliSieverts per day in cruise.
A team of scientists from NASA's Curiosity rover mission has discovered ancient rounded pebbles on the Martian surface, formed only by water transport. This finding supports the prospect that Mars could have hosted life in the past.
A Michigan State University project is developing a measurement system to capture team effectiveness in real time, providing instant feedback to astronauts. The system consists of badges that measure activities such as heart rate, motion, and vocalization to identify potential issues with team cohesion.
Researchers using NASA's HiRISE camera have identified almost 250 fresh impact craters on Mars each year, providing a more accurate measure of surface processes on the Red Planet. The cratering rate is estimated at an average of one per area roughly the size of Texas, offering insights into climate change and the planet's activity.
Scientists have discovered ancient pockets of water that contain abundant chemicals known to support life, similar to those found on Mars. The study's findings may force us to rethink which parts of our planet are fit for life, and could reveal clues about how microbes evolve in isolation.
Researchers at Princeton University suggest that Mount Sharp, a 3.5-mile high Martian mound, was likely formed by strong winds carrying dust and sand into the Gale Crater. The analysis challenges the prevailing theory that the mound formed from layers of lakebed silt.
A team of scientists, including a Michigan State University professor, has examined a nakhlite meteorite formed on Mars over a billion years ago. The study found mineral and chemical signatures indicating terrestrial weathering, which could provide valuable clues about Mars' habitability conditions.