Articles tagged with Mars
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Researchers analyzed data from two meteorite impacts recorded by NASA's InSight spacecraft, revealing a very uniform structure and high density of the Martian crust. The findings provide new insights into the planet's core, mantle, and crust, shedding light on the formation and evolution of Mars.
Researchers used seismic data and orbital observations to refine knowledge of Mars' planetary interior. The studies provide new constraints that validate and refine models of the planet's internal structure and dynamics of major impacts.
Scientists have detected seismic surface waves on Mars for the first time, providing new insights into the planet's crust and structure. The study estimates the average properties of the Martian crust between 3 to 18.6 miles below the surface, revealing faster seismic velocities that suggest compositional differences or reduced porosity.
A recent study published in Nature suggests that Mars is still experiencing volcanic activity, with quakes originating from the Cerberus Fossae region indicating a warm source of molten lava. The seismic data also shows darker deposits of dust surrounding the area, suggesting geological evidence of more recent volcanic activity.
Researchers analyze seismic surface waves to determine Martian crust density and structure. The data reveals a uniform crust beneath the impact sites, contradicting earlier findings at the InSight lander.
Researchers have found conclusive evidence of a 3.5-billion-year-old shoreline with substantial sedimentary accumulation on Mars' northern hemisphere. The discovery provides key insights into the planet's ancient climate and its evolution, as well as the potential for life.
A new study suggests that ancient sleeping bacteria could be found beneath Mars' surface, complicating efforts to search for life. The research team found that certain strains of bacteria can survive in Martian conditions, potentially contaminating future missions and posing biodefense risks.
A new study investigates the effects of desiccation and freezing on microbial ionizing radiation survivability on Mars. The researchers found that desiccated and frozen cells can survive extreme conditions, increasing the probability of finding evidence of past or present life on Mars.
Researchers at Carnegie Mellon University have developed a new approach for conducting automated science in space by balancing risk and scientific value. The approach uses a model that estimates science value and risk, allowing rovers to chart their own course while protecting against high-risk missions.
Scientists conducted two 15-day missions in the LunAres Research Base to investigate the psychological effects of isolation and confinement on astronauts. The studies revealed insights into stress responses, cognitive performance, group dynamics, and microbiota in response to living in a low-resource environment.
A team of researchers has found new evidence for the presence of liquid water beneath Mars' south polar ice cap using spacecraft laser-altimeter measurements and computer model predictions. The findings agree with earlier radar data interpretations and provide independent confirmation of the existence of subglacial liquid water.
Researchers at Cornell University suggest that bright reflections on Mars' South Pole may be caused by layered composition rather than liquid water. The team's simulations showed that layer thickness and separations have a greater impact on reflection power than material composition.
Researchers developed the first model of Mars' early atmosphere, linking high temperatures to ocean formation and showing water vapor condensed in the lower atmosphere, while molecular hydrogen escaped. This model supports findings from spacecraft data, indicating Mars was wet and had warm-to-hot oceans for millions of years.
A new virtual hiking map for Jezero crater has been created using orbital imagery, terrain data, and real-time 3D panoramic views. The map allows users to explore the Martian surface in detail, including steep slopes and immersive environments.
Researchers located four new craters created by impacts on Mars' surface using data from a seismometer and visuals acquired from the Mars Reconnaissance Orbiter. This is the first time that researchers have captured the dynamics of an impact on Mars.
A recent study by Dr Joseph Michalski from HKU suggests that the number of ancient Martian lakes may have been significantly overestimated. The analysis of satellite data reveals evidence for smaller lakes on Mars, which could contain critical information about past climates.
Researchers at Washington State University have created a strong and high-performance material by mixing Martian regolith with a titanium alloy. The composite showed better properties than the metal alone, making it suitable for making tools or rocket parts on Mars.
The joint observations of EMM and MAVEN reveal fine-scale structures in proton aurora spanning the full day side of Mars, indicating a chaotic solar wind interaction. This phenomenon is caused by turbulent conditions around Mars allowing charged particles to flood directly into the atmosphere, forming patchy proton aurora.
The MIT-led MOXIE experiment has successfully produced oxygen from Mars' thin atmosphere, producing six grams of oxygen per hour across various conditions. This achievement demonstrates the feasibility of in-situ resource utilization, which could support human missions on Mars by generating breathable oxygen and fuel for rockets.
The Perseverance rover collected igneous cumulate rocks from four sites on the floor of Jezero Crater, providing evidence of aqueous alteration. These rocks will help scientists determine when Mars' climate was conducive to lakes and rivers, addressing major questions about the planet's history.
The Perseverance rover has discovered rocks on Mars that are composed of large grains of olivine, a muddier version of peridot that tints many beaches dark green. These findings suggest that the planet had liquid water, air, and a magnetic field in the past, conditions similar to those when life first arose on Earth.
The Perseverance rover has collected the first Martian rock samples that could be returned to Earth, shedding light on whether Mars ever hosted life. The rock samples come from the Jezero crater floor, where scientists believe a watery past may have supported life.
The Mars Perseverance Rover's ground-penetrating radar instrument has obtained detailed images of the underground structure of Jezero crater, revealing unexpectedly inclined rock layers. The tilt of these layers suggests a complex geological history, with possible origins including slow-cooling lava or sediment deposits.
The Martian ionosphere's anisotropic characteristics cause dispersion of radio signals, distorting echoes and degrading image quality. A model simulating the ionospheric effect is developed to estimate Mars' subsurface without considering magnetic fields and solar activity.
A team of researchers from Australian National University developed a mathematical model to simulate the impact of prolonged exposure to zero gravity on the cardiovascular system. The model assesses the risk of fainting or medical emergencies when stepping out of a spacecraft on Mars, providing crucial insight for human mission planning.
A plasma-based approach may one day convert carbon dioxide into oxygen and produce fuels, fertilizers on the red planet. The system could play a critical role in life-support systems and future human settlement on Mars.
Scientists at the University of Delaware have developed a new type of cement that can be used to build structures on the moon or Mars. The geopolymer cement is made from clay-like topsoil materials found on these planets and has been shown to be durable enough for vertical launch pads.
A new analysis of seismic data from NASA's Mars InSight mission has found that the Martian subsurface contains little or no ice, contradicting a leading idea about water on Mars. This discovery suggests that conditions are too cold to freeze water at depths below 300 meters near the equator.
Researchers at Rice University propose a new scenario explaining the 2016 discovery of tridymite by NASA's Curiosity rover. They suggest that magma cooled slowly in a chamber below a volcano, producing concentrated silicon-rich ash that was later weathered and sorted by water.
A new study in Frontiers in Microbiology found that centuries-old lava caves on Hawaiʻi Island harbor an astonishing number of previously undiscovered bacterial species, including the Chloroflexi group. These microbes play key ecological roles in their communities and may have played a crucial role in shaping life on Mars and early Earth.
A global team led by researchers from Curtin University used a supercomputer-powered technology to explore the geology of Mars without leaving home. They found that the ancient Martian meteorite NWA 7034 was ejected 5-10 million years ago from the north-east of the Terra Cimmeria - Sirenum province, in the southern hemisphere of Mars.
A recent study published in Nature Communications has uncovered the likely Martian origin of a 4.48-billion-year-old meteorite named Black Beauty. The team found that this ancient fragment may have come from a region on Mars similar to Earth's continents, providing valuable insights into our planet's geological past.
A team of researchers has discovered 1.2-billion-year-old groundwater containing radiogenic helium, neon, and xenon, which could sustain subsurface microbial communities. The study reveals how energy stored in the Earth's subsurface can be released and distributed through its crust.
Researchers develop a motorless sailplane concept that harnesses wind energy to explore Mars' atmosphere and geology. The innovative design, inspired by albatross flight, enables the sailplanes to fly for days at a time without relying on solar panels or batteries.
Researchers found that a Martian meteorite shows evidence of delivering chondritic volatiles to the forming planet before nebular gases, contradicting current thinking. This suggests that Mars' growth was completed before the solar nebula was dissipated, and raises questions about the origin and composition of Mars' early atmosphere.
A research team discovered that bacterial cellulose produced by Komagataeibacter bacteria survived on Mars-like conditions. The study found minor changes in the genome after reactivation on Earth, suggesting cellulose as a potential biomarker for extraterrestrial life.
Researchers investigate protogenetic clinopyroxene inclusions for diamond dating and find implications for understanding Earth's mantle processes. They also study Andean deformation and its relation to flat slab subduction and tectonic inheritance.
Researchers found that Mars' extreme energy budget imbalance can contribute to dust storms. The team analyzed four years of data from NASA missions and found a correlation between the planet's orbits and temperatures, suggesting that the energy excess may be one of the generating mechanisms of Mars' dust storms.
A new study published in Science Advances suggests that life on Mars is unlikely due to limited water circulation. Researchers used neutron and X-ray tomography to analyze a 1.3 billion-year-old meteorite, finding only small amounts of water reacted with the rock.
A new study by UC Berkeley scientists finds that solar photovoltaics can provide sufficient power for extended Mars missions, outperforming nuclear fusion reactors in over 50% of the planet's surface. This breakthrough provides a more practical solution for long-term human settlements on Mars.
Researchers from UC Berkeley found that a photovoltaic array using compressed hydrogen for energy storage can efficiently power human missions on Mars. The system beats out nuclear power across about 50% of the Martian surface.
Researchers from InSight's Marsquake Service have detected two massive marsquakes on Mars' far side, with magnitudes 4.2 and 4.1. The events provided unique insights into the planet's core-mantle boundary and offered a glimpse into previously unexplored regions of Mars.
Researchers at Indian Institute of Science (IISc) have developed a method to make bricks out of Martian soil using bacteria and urea. These 'space bricks' can be used for building-like structures on Mars, reducing porosity and increasing strength. The team plans to study the effect of Mars' atmosphere and low gravity on the bricks.
Researchers propose a modular Mars exploration rover system consisting of four two-wheeled robots that can operate independently or combine in various constellations. The approach enables longer missions and gathers more information about the planet's history and potential habitability.
The study focused on the analysis and selection of Mars parachute types, with a focus on supersonic speed, low density, and harsh atmospheric conditions. The optimized tapered DGB parachute structure demonstrated improved deceleration performance, meeting the requirements for the Tianwen-1 Mars probe.
Planetary scientist Roger Wiens has equipped the Perseverance rover with a microphone and laser technology to analyze rocks and record sounds on Mars. This innovation opens up new avenues for research, including studying Martian geology, wind patterns, and dust devils.
Researchers used NASA's Planetary Spectrum Generator to analyze light from Venus, Mars, and Jupiter, shedding new light on the presence of biosignatures and chemical compounds. The study helps clarify the association between methane on Mars and life, as well as the fate of Martian water.
Perseverance mission has recorded the first ever sounds from Mars, showing that the planet is quiet due to low natural sound sources. The rover's microphone captured sounds within the human audible spectrum, including shock waves and helicopter flights.
A team of researchers led by Purdue University's Michael Sori found that smaller Martian ice deposits hold key evidence for the planet's orbit and axial tilt's impact on its climate. The study used NASA's HiRISE camera images to analyze layer shapes in an ice deposit, providing insights into Mars' climate history.
A new study on Mars' ice deposits provides insight into the planet's past climate, matching layers to Martian orbital dynamics with unprecedented resolution. The findings help scientists understand Mars' climate history and identify potential periods of habitability.
Researchers analyzed the effects of environmental pressure setting, time step, and mesh density on the pressure differential calculation results. The study used numerical simulation to improve the accuracy of calculations, with results showing that changes in ambient pressure are the primary factor affecting the pressure differential.
The researcher will use a combination of rover, orbital, and analog data to understand the geological record on Mars. The team aims to link the orbital data with images and thermal infrared data from the Curiosity Rover to improve our understanding of past depositional conditions across Mars.
Researchers have expanded knowledge of hematite's magnetic and color properties to better understand past climates and environments. Hematite's presence on Mars may provide clues about climatic variations, water presence, and potentially life.
Researchers explore the influence of forebody and afterbody shapes on Mars ascent vehicle aerodynamic performance. Studies reveal that conical forebodies can reduce drag in slender ascent vehicles, while exponential forebodies improve resistance performance in short blunt bodies.
New research investigates electrolysis efficiency on the Moon and Mars, finding that lower gravity reduces oxygen production by 11%. The study provides valuable insights for establishing life support systems and power budgets for future human settlements.
Researchers recreated conditions expected in Mars' core billions of years ago and found that molten metal gave rise to a brief magnetic field. This led to the evaporation of water vapor and eventual loss of Martian oceans about 4 billion years ago.
Researchers found evidence of high-intensity damage caused by asteroid impact in a Martian meteorite, challenging previous findings on early Mars habitability. The discovery provides new insights into dynamic processes that affected the young planet's surface.
A recent study discovered that a hydrothermal crater lake in Costa Rica's Poás volcano is home to a diverse range of microorganisms, including the single 'extremophile' genus Acidiphilium. These bacteria have adapted to survive in extreme conditions, such as high temperatures and toxic metals, which may be similar to those found on Mars.
A recent study suggests that a chemical compound called magnesium hydrosilicate, stable at high pressures and temperatures, could have stored water deep within the Earth's mantle during its violent early days. This finding has significant implications for understanding the origin of water on Earth and potentially habitable exoplanets.
A recent study led by the University of Texas at Austin has found that liquid water detected under Mars' ice-covered south pole is likely a dusty mirage. However, the researchers suggest that ancient lakes and riverbeds may still be present on the planet, offering clues about its wetter past.