Articles tagged with Mars
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Researchers found that bacteria exposed to perchlorate produce stronger calcium carbonate crystals, leading to better biocementation skills. The presence of guar gum and nickel chloride enhances the process, paving the way for alternative building strategies on Earth and Mars.
Mars plays a measurable role in shaping Earth's long-term climate patterns, including ice ages, through its gravitational influence and orbital cycles. The study suggests that Mars' presence is necessary for the existence of major climate cycles, which have driven evolutionary changes on Earth.
A team of researchers from Rice University discovered that lakes on ancient Mars could persist under thin seasonal ice for at least decades, contradicting earlier climate models. The study suggests that surface features shaped by sustained liquid water coexist with the idea that early Mars was too cold to support such conditions.
A team of Chinese scientists has developed a new model, GoMars, to simulate Martian dust cycles and global-scale dust storms. The 50-year simulation predicts consistent seasonal and spatial patterns, including the timing of peak dust devil lifting and intense dust devil activity in Amazonis region.
Researchers used NASA's measurements to simulate sound propagation on Mars, providing insight into weather and terrain effects on acoustic propagation. The study focused on the Jezero crater, where it simulated how sound moves through complex terrains, helping scientists understand how other atmospheres compare to Earth's.
Researchers at the University of Texas at Austin have mapped Mars' large river drainage systems, outlining 16 areas where life could have existed. These systems are crucial for understanding Martian habitability and potential past life.
Researchers found yeast cells can withstand shock waves and toxic perchlorate salts, simulating Martian conditions. The yeast's ability to produce ribonucleoprotein condensates helps protect against stress, making it a model for astrobiology research and potential life support systems in space.
Researchers found that a pyrite-oxidizing microbe preserves up to 90% of atmospheric oxygen in sulfate, offering insights into microbial activity in ancient environments. This discovery could help analyze oxygen isotope data from Martian sediments for signs of life and provide clues to environmental conditions on early Earth.
Researchers found that yeast can survive Martian-like conditions by assembling ribonucleoprotein condensates, which protect RNA and affect mRNA fates. The study suggests the importance of understanding RNP condensates in predicting the effects of Martian conditions on life.
Researchers found that CO2 ice blocks on Martian dunes create gullies through explosive sublimation, similar to a mole burrowing into sand. The process involves the block digging into the slope and moving downwards, leaving behind small ridges of settled sand.
A new study on Mars crater deposits reveals the planet went through repeated ice ages driven by shifts in its axial tilt, resulting in a gradual drying of the planet. The study provides insights that can be applied to Earth's changing environment and helps identify safe regions for future missions.
Scientists have tracked 1039 dust devils to reveal how they lift dust into the air and sweep around Mars' surface. The study found wind speeds of up to 44 m/s, faster than previously measured with rovers on the ground, and improved our understanding of Martian weather patterns.
Researchers from UMass Amherst identified a unique mineral on Mars, ferric hydroxysulfate, which provides clues about the Martian environment and history. The mineral was formed at high temperatures in an acidic environment and is believed to have been created via geothermal heat.
Recent experiments and field tests in a wind tunnel and quarry show that spherical rovers, known as Tumbleweed rovers, can harness the power of Martian winds to navigate over various terrains. The results validate simulations and demonstrate the potential for large-scale and low-cost exploration of the Martian surface.
Scientists have identified two dozen types of minerals that reveal a dynamic history of volcanic rocks altered by liquid water on Mars. The findings support multiple episodes of habitability, with three distinct categories of minerals indicating different conditions favorable or unfavorable for life.
A rare glimpse into Mars's north polar vortex has revealed that it produces a seasonal ozone layer. The extreme cold temperatures inside the vortex allow ozone to accumulate, making it essential for understanding Martian atmosphere chemistry. This finding has significant implications for the search for past life on Mars.
Researchers will evaluate a patent-pending electrolyzer in simulated partial gravity environments aboard parabolic flights. The technology is designed to produce fuel, oxygen, and other life support compounds on the Moon or Mars for long-term human habitation.
Two studies reveal that natural processes can bring organic-rich materials to the Mars rover, increasing its diversity of samples. Rockfalls in Oxia Planum may have originated from elsewhere on Mars and were deposited through a series of floods over 3.5 billion years ago.
A new study suggests that volcanic activity on early Mars emitted sulfur gases, creating a greenhouse effect and making the planet's climate more hospitable to life. The research found high concentrations of chemically reduced forms of sulfur, which are highly reactive and could have induced a hazy environment.
A new study has revealed chemical signatures of ancient Martian microbial life in the Bright Angel formation, a region of Jezero Crater known for its fine-grained mudstones rich in oxidized iron and organic carbon. The findings suggest that early microorganisms may have played a role in shaping these rocks through redox reactions.
The Perseverance rover discovered chemical reactions involving minerals, water, and possibly organic material on ancient Mars. These findings suggest that conditions were favorable for life on the planet billions of years ago.
Scientists have captured images of Mars' aurorae and developed tools to predict when they will occur on the Red Planet. The predictions are crucial for ensuring astronaut safety during solar storms.
A new study suggests that ancient Martian rocks contain minerals and organic matter indicative of a habitable environment and potential biological processes. The discovery was made in the Jezero Crater's Bright Angel formation, which is considered a prime target in the search for signs of past life.
New research finds Mars' mantle preserves a record of its violent beginnings, with chunky layers containing ancient fragments up to 4km wide. This discovery offers a rare glimpse into the evolution of rocky planets and challenges current understanding of planetary formation.
MIST uses a hierarchical, rules-based classification system grounded in verified mineral formulas from the RRUFF mineral database. It accurately identifies hundreds of different mineral species from their chemical composition, even accounting for natural imperfections and vacancies found in real minerals.
A new iron sulfate mineral has been identified on Mars, providing insight into the planet's early history. The discovery suggests that geothermal heat played a crucial role in shaping the Martian surface, with minerals forming under conditions of high temperature and oxygen presence.
A new study from NYU Abu Dhabi found that high-energy particles from space, known as cosmic rays, could create energy needed to support life underground on planets and moons. This process, called radiolysis, can power life even in dark, cold environments with no sunlight.
Researchers discovered over 15,000 kilometers of ancient riverbeds on Mars, suggesting that the planet may have experienced warm and wet conditions for a geologically relevant period. The presence of fluvial sinuous ridges indicates that flowing water was once widespread in Noachis Terra.
M-MATISSE aims to unravel Mars' magnetosphere, ionosphere, and thermosphere using two identical spacecraft. The mission could provide crucial insights into the planet's habitability and evolution.
A recent study suggests that Mars' surface features were shaped by short periods of liquid water, followed by 100-million-year-long periods of desert. The research, led by University of Chicago scientist Edwin Kite, proposes a new explanation for why Mars became a barren desert planet.
A team of researchers at Harvard University has demonstrated the growth of green algae inside shelters made from bioplastics in Mars-like conditions. The experiments show a closed-loop system that can sustain itself and grow over time, offering a potential solution for sustainable habitats in space.
A recent paper by SwRI-led researchers summarizes the scientific community's notable progress in advancing the understanding of the formation and evolution of the inner rocky planets. The study focuses on late accretion's role in controlling the long-term evolution of these planets, with implications for their habitability.
A new study by Brown University researchers used machine learning to analyze a massive dataset of slope streak features on Mars, finding no evidence of liquid water. The research suggests that the streaks are likely formed by dry processes such as wind and dust activity, rather than liquid flow.
Researchers Mohammad Afzal Shadab and Eric Hiatt developed a computer model that calculates the time it took for water on early Mars to percolate from the surface down to the aquifer, finding a 50-200 year timeframe. This process could have covered Mars with at least 300 feet of water.
Researchers have developed a new method to study Martian subsurface properties using ejecta blankets around impact craters. The technique was tested on two fresh craters and showed promising results, confirming that differences in ejecta radius reflect known subsurface properties.
Researchers propose in-situ thermoelectric conversion on Mars, utilizing the abundant atmospheric gases for electricity generation and oxygen production. The technology shows promising environmental suitability and potential for significant weight reduction, enabling more efficient microreactors.
A multidisciplinary team analyzed seismic waveforms to reveal a significant low shear-wave velocity anomaly at a depth of 5.4–8 km, indicating possible liquid water in the upper crust.
A new study from geologists at the University of Colorado Boulder found that ancient Mars was likely warm and wet, with valleys and channels formed by heavy precipitation. The team's findings add new evidence to a long-running debate in planetary science and suggest that water played a key role in shaping the Martian surface.
A new study by Texas A&M University researchers has revealed insights into Mars' geological history and potential for ancient life. The team analyzed diverse volcanic rocks in the Jezero Crater, providing a window into the planet's distant past and signs of altered olivine.
The discovery of large carbon deposits in Gale Crater suggests that ancient Mars had a CO2-rich atmosphere, which supported liquid water and potentially life. Scientists are now trying to determine how much of this CO2 was sequestered, and whether it impacted Mars' ability to stay warm.
Researchers analyzing data from NASA's Perseverance rover uncover mineral-forming events beneath the Martian surface, bringing scientists closer to answering if life existed on Mars. Two separate generations of calcium-sulphate minerals are found in different regions, hinting at multiple potential windows for life to have existed.
A new study from the University of Texas Institute for Geophysics suggests that Mars' molten core could explain its unusual magnetic field. Researchers used computer simulations to model a fully liquid core and found that it could produce a one-sided magnetic field, matching the imprint seen today.
Researchers have demonstrated that certain lichen species can survive Mars-like conditions, including ionizing radiation and harsh temperatures. The study suggests that lichens could potentially survive on Mars despite high doses of X-ray radiation.
A new study by University of Colorado Boulder researchers suggests that long-term exposure to Martian dust could lead to chronic respiratory problems, thyroid disease, and other health issues. The team identified toxic chemicals in the dust, including perchlorates, which can interfere with human thyroid function.
Researchers from the Faculty of Sciences discover a deeper understanding of Martian climate through analysis of atmospheric waves. The study highlights greater asymmetry between Mars' southern and northern hemispheres, shedding new light on the Red Planet's climate dynamics.
Researchers have detected unprecedentedly large organic molecules on Mars, containing up to 12 consecutive carbon atoms. These findings provide valuable insights into the planet's potential for life and pave the way for future interplanetary science missions.
A recent PNAS study suggested Mars has a significant amount of liquid water in its mid-crust, but LASP Senior Research Scientist Bruce Jakosky challenges this conclusion. Using InSight mission data, the team found that the presence of water is not required by the data.
A new study reveals that atmospheric gravity waves play a crucial role in driving latitudinal air currents on Mars, particularly at high altitudes. The findings suggest fundamental differences from Earth's middle atmosphere.
Researchers at the University of Tokyo have developed a new optical photothermal infrared spectroscopy method to detect microbial cells in ancient rocks, analogous to those found on Mars. The study strengthens Mars sample return protocols by providing a reliable way to assess the presence or absence of life in samples.
Researchers from Tohoku University have improved a Mars climate model to account for the planet's non-uniform regolith properties. The enhanced model shows that highly absorptive regolith in mid- and low latitudes retains substantial amounts of absorbed water, which remains on the surface as stable adsorbed water.
A recent study by an international team of researchers suggests that the iron oxide mineral ferrihydrite is responsible for Mars' distinctive red hue. The researchers combined observational data with laboratory experiments to create Martian dust that matched known spectral data, indicating a water-rich environment in the past.
Scientists have identified a crystal phase that could theoretically crystallize under Martian core conditions, suggesting the Red Planet may have a solid inner core. This discovery was made using diamond anvil cells and single-crystal diffraction at the European Synchrotron Radiation Facility.
New analysis of spacecraft observations and laboratory techniques reveals that Mars's red colour is better matched by ferrihydrite, an iron oxide containing water. This discovery transforms our understanding of why Mars is red and suggests that the planet rusted earlier than previously thought.
Scientists successfully identified fossil filaments of sulfur-oxidizing bacteria in gypsum samples from Algeria, providing a methodological framework for detecting biosignatures in Martian sulfate minerals. This technology could be integrated into future Mars rovers or landers.
A new international study suggests that the water-rich iron mineral ferrihydrite may be responsible for Mars' iconic red color. The findings point to a potentially habitable past for Mars, with evidence of liquid water on the planet's surface billions of years ago.
A Chinese rover has discovered underground beach deposits in an area thought to have once been the site of an ancient sea on Mars. The deposits, which are similar to those found on Earth, suggest that Mars had a long-lived body of water with wave action to distribute sediments along a sloping shoreline.
The Zhurong rover discovered hidden layers of rock under the Martian surface indicating an ancient northern ocean. This finding offers clear evidence that Mars once had a significant body of water and a more habitable environment for life.
A Chinese rover has detected underground beach deposits on Mars, indicating the presence of an ancient sea that covered a significant portion of the planet. The deposits, which date back 4 billion years, were formed through wave action and sediment distribution, suggesting a long-lived body of water.
Scientists have retrieved handpicked samples from Mars, including rock cores and fragmented rocks, for the first time in history. The samples will help learn more about Mars' past life, climate, and geology, as well as provide insights into Earth's surface.
Lauren Berger, a Texas A&M University doctoral student, has been awarded a prestigious FINESST grant from NASA to study Martian dunes. She aims to analyze the shapes and patterns of compound dunes on Mars using high-resolution images, comparing them to similar dunes on Earth.