Articles tagged with Habitable Planets
Scientists at Penn State and SETI Institute used the Allen Telescope Array to scan the TRAPPIST-1 star system for radio signals similar to those used by rovers on Mars. Although no extraterrestrial technology was found, the project introduced a new method for future searches.
A study published in Science Advances suggests that unmelted asteroids, or 'primitive' materials, were a crucial source of volatiles on Earth. This finding implies that the materials necessary for life to emerge may not have been readily available without these unmelted asteroids.
Two UMD Astronomy space probes, AXIS and PRIMA, have advanced to the next round of consideration for a $1 billion NASA mission. AXIS will study X-rays from stars and black holes, while PRIMA will explore far-infrared radiation to understand galaxy formation.
Researchers from University of Texas at Arlington have identified 206 systems of interest for potential habitability, including one system where the planet is always situated in the HZ. The team analyzed data from NASA Exoplanet Archive and found F-type stars to be a promising case for life beyond Earth.
Researchers at the University of Colorado Boulder created a type of organic sulfur compound, dimethyl sulfide, in a lab without organisms present. This finding challenges previous research on its potential as an indicator of life beyond Earth.
Astronomers discovered that super-Earths cannot form near low-metallicity stars due to a strict cut-off in conditions. The study provides an upper limit on the number and distribution of small planets in the galaxy.
By combining data from Hubble and MAVEN, scientists measured the number and current escape rate of hydrogen atoms escaping into space, allowing them to extrapolate the history of water on Mars. The study found that atmospheric conditions change rapidly, with rapid releases of atoms at high altitudes.
Researchers at Georgia State University have developed a new approach to finding life beyond Earth by focusing on the most abundant type of star in the universe: M dwarfs. With their vast resources and potential for habitable planets, M dwarfs offer the best chance for scientists to discover life-supporting exoplanets.
Researchers discovered an unexpected increase in H2O and HDO concentrations in Venus' mesosphere, with the HDO/H2O ratio rising 120 times higher than expected. This finding suggests that solar radiation broke down water isotopologues, producing hydrogen atoms that escape into space, leading to deuterium enrichment.
Researchers found that as planet mass increases, water tends to integrate with the iron core, leading to a reevaluation of astronomical observation data and planetary habitability. This discovery has significant implications for the study of Super-Earths and the search for life beyond Earth.
Seven rock samples collected along the fan front of Mars' Jezero Crater show evidence of minerals formed in water, suggesting a watery environment. While organic matter cannot be confirmed, these rocks may hold the key to finding remnants of ancient Martian life.
Researchers infer that Mars' crust has stores of liquid water, essential for a habitable planet. The study suggests that liquid water in the mid-crust is the most plausible explanation for the data collected by the InSight lander.
A team of scientists has found evidence for a large underground reservoir of liquid water on Mars, which could be a promising place to look for life on the planet. The reservoir is estimated to cover most of the Martian surface and is located in tiny cracks and pores in rock beneath the surface.
Two proposed UK space missions, led by the University of Leicester, will investigate the Sun's impact on atmospheres, space weather and habitability. Elfen will study Earth's magnetosphere, while SIRIUS will analyze stellar winds and their effects on exoplanetary environments.
Researchers have discovered that far-ultraviolet radiation from stellar flares on red dwarf stars can be three times more energetic than previously thought. This finding challenges existing models of exoplanet habitability and suggests that many stars may pose a risk to the potential for life on planets around them.
The European Space Agency's PLATO mission aims to find nearby potentially habitable worlds around Sun-like stars. The space telescope will blast into orbit in December 2026 and study the stars using a range of techniques, including asteroseismology, to work out their masses, radii, and ages.
Research led by Heidelberg University reveals that small water-rich astronomical bodies in the early solar system supplied building materials for planets, including the Earth. These planetesimals brought water to Earth through their thermal evolution and point of origin.
A study by University of Texas at Dallas geoscientist Dr. Robert Stern and colleague Taras Gerya suggests that plate tectonics, oceans, and continents are necessary for the evolution of intelligent civilizations. The researchers propose refining the Drake equation factor to account for these requirements, which could explain the Fermi ...
The NASA TESS-Keck Survey catalog features 126 exotic planets with detailed measurements allowing for comparisons with our solar system. Several planets stand out as touchstones for deepening astronomers' understanding of planetary formation and evolution.
Astronomers have discovered an Earth-like exoplanet 40 light-years away with a surface temperature of 42°C (107°F), making it potentially habitable. The discovery of Gliese 12 b offers insights into the evolution of habitability on planets across our galaxy.
A team of UH astronomers has discovered a diverse range of exotic exoplanets using the TESS-Keck Survey, which provides new insights into their properties and environments. The study reveals rare worlds with extreme environments and potentially habitable planets.
The James Webb Space Telescope has provided the first measurements of an exoplanet's core mass, with WASP-107 b showing a thousand times less methane than expected. The planet's super-sized core and turbulent atmosphere are being studied to better understand how planetary atmospheres behave in extreme conditions.
The discovery of SPECULOOS-3 b is the second of its kind around an ultra-cool dwarf star and offers opportunities for life on orbiting planets to develop due to the star's long lifespan. The planet takes 17 hours to complete an orbit, making days and nights endless.
The study highlights the impact of volatile elements, convective mechanisms, liquid water, and carbon cycles on planetary habitability. Volatile elements affect atmospheric composition, while convection mechanisms shape surface conditions and regulate nutrient cycles.
A team of researchers using the James Webb Space Telescope has detected signs of an atmosphere around 55 Cancri e, a rocky exoplanet. The planet's surface is estimated to be molten, but the team believes it may have a secondary atmosphere that could provide insights into habitable planets.
A new study led by Dr. Assaf Hochman uncovers ozone's impact on atmospheric stability and temperature distribution on Proxima Centauri b, a habitable exoplanet tantalizingly close to Earth's solar system. The research highlights the importance of considering interactive ozone in understanding Earth-like exoplanets.
A new study challenges the initial detection of a biosignature gas on K2-18b, suggesting that the data may be inconclusive. However, researchers believe it's possible for life to produce detectable levels of dimethyl sulfide (DMS) in the planet's atmosphere.
A team of astronomers and citizen scientists has discovered a planet in the habitable zone of an unusual star system, including two stars and potentially another exoplanet. The newly discovered planet, TOI 4633 c, boasts the second-longest orbit of any planet discovered with TESS data.
Researchers have found ancient rocks in Greenland that retain signatures of a magnetic field with a strength of at least 15 microtesla, extending the magnetic field's age by 200 million years. The discovery sheds light on the planet's early conditions and may have played a critical role in making Earth habitable.
A team of scientists detected the tiniest 'starquakes' ever recorded in the smallest and coolest dwarf star, Epsilon Indi. The detection was made possible by the ESPRESSO spectrograph at the European Southern Observatory's VLT, allowing for unprecedented precision levels.
Researchers discovered that 19 amino acids essential to life on Earth can persist for up to four weeks in concentrated sulfuric acid, which is similar to the concentrations found in Venus' clouds. This finding suggests that the clouds of Venus could support complex chemicals needed for life.
A University of Arizona-led study explores sulfur's significance in the emergence of life on Earth, shedding light on its possible role as an RNA precursor. The research suggests that sulfur's reactivity could have hindered its availability for origin-of-life chemistry.
Researchers applied Bayesian network analysis to a corpus of 142 science fiction works, investigating the representation of extrasolar planets. They found that after the discovery of real exoplanets in 1995, fictional exoplanets became less Earth-like, reflecting the scientific reality of vast numbers of diverse exoplanet types.
The study, published in The Astrophysical Journal, tested the future LIFE mission's capabilities on real spectra using data from NASA's Aqua Earth observation satellite. It demonstrated that a space telescope like LIFE could detect signs of a temperate, habitable world on Earth-like exoplanets.
Researchers have identified a CO-rich atmosphere on exoplanets that could support life. The study reveals a 'gap' in atmospheric conditions where CO levels are higher than expected, indicating potential habitability.
Researchers from Ohio State University tested upcoming telescopes' ability to detect chemical traces of oxygen, carbon dioxide, methane and water on 10 rocky exoplanets. The study found that two nearby worlds, Proxima Centauri b and GJ 887 b, are highly adept at detecting biosignatures with advanced telescopes.
Scientists have found a shallow soda lake in western Canada that meets the conditions required for life to emerge, including high levels of dissolved phosphate. This discovery provides new support for the idea that life could have emerged from lakes on early Earth, around 4 billion years ago.
Researchers found that iron meteorites from the inner and outer solar systems had similar amounts of missing iron metal, suggesting that water was present in planetesimals right from the start. This challenges current models, which predict cooler temperatures for the inner solar system or formation further out.
Researchers have devised a new method to identify habitable planets and potentially inhabited planets by comparing atmospheric CO2 levels, which suggests the presence of liquid water. This signature can be detected with current telescopes, providing a path to identify life on exoplanets.
Scientists propose searching for depleted carbon dioxide in planetary atmospheres as a sign of liquid water and potentially life on other planets. A study suggests that low carbon abundance relative to neighboring planets could indicate habitability.
Scientists simulated the runaway greenhouse effect, transforming habitable climates into hostile environments, with significant changes in atmospheric structure and cloud coverage. The study provides key insights for the search of life elsewhere, as it demonstrates a critical water vapor threshold beyond which a planet cannot cool down.
Researchers find planet more than 13 times as massive as Earth orbiting ultracool star LHS 3154, challenging current theories of planet formation. The discovery requires reexamination of how planets and stars form, with a heavy planetary core inferred that would need more solid material in the disk.
Researchers uncover six transiting planets around HD110067, a bright star with a chain of resonances spanning five pairs. The precise gravitational dance enabled the team to solve the previously unsolvable puzzle of the system's arrangement, revealing planetary orbits and orbital periods.
A recent study by Professor Amri Wandel reveals that subglacial liquid water can extend the Habitable Zone for tidally locked planets and even broaden its limits. This discovery presents opportunities for searching for extraterrestrial life on a diverse range of exoplanets.
Researchers investigate geologic features on icy moons, revealing mechanisms behind strike-slip faults. Studies on Titan and Ganymede provide insights into potential environments conducive for life emergence.
New studies show that giant gas planets in nearby star systems can prevent life on smaller, rocky planet neighbors by kicking them out of orbit and wreaking havoc on their climates. Researchers found that four giant planets in the HD 141399 system are likely to destroy the chances for life on Earth-like planets.
A new study reveals that magma oceans on rocky exoplanets can affect their size, evolutionary path, and mantle structure. The research found that these ocean's compressible nature can make lava-rich planets denser than solid planets of similar size.
Research suggests that a merged supercontinent will lead to extreme temperatures, making most of the world uninhabitable for mammals. The team used supercomputer climate models to simulate temperature trends, leading to predictions of widespread heat stress and mortality in humans and other species.
Researchers used a new code to test the capabilities of future giant telescopes, which could help identify potentially habitable planets. The study found that ELT and TMT can make high-resolution observations of brown dwarfs and exoplanets over a single rotation, while GMT's instruments require multiple rounds.
A new study by NASA and Japan's Osaka University suggests that rogue planets, drifting through space without a star, may outnumber stars with orbiting worlds. The Roman Space Telescope could discover up to 400 Earth-mass rogue planets, according to the findings.
Researchers from Ohio State University found that some low-mass stars have unexpectedly strong surface magnetic fields, which could intensify their radiation for billions of years. This discovery challenges current models of stellar evolution and has important implications for the search for life on other planets.
Scientists have developed a new radar technique that can image hidden features within the upper few feet of ice sheets, including melting glaciers on Earth and potentially habitable environments on Jupiter's moon Europa. The technique boosts resolution by combining two different radar bandwidths and looking for discrepancies.
A new study reveals evidence of diverse organic material on Mars, with signals consistent with molecules linked to aqueous processes. The findings suggest the existence of several distinct reservoirs of potential organic compounds, which may have persisted on Mars for a far more extended period than previously thought.
A new study finds that many Earth-like exoplanets with liquid water exist, increasing the chances of finding life. Researchers discovered two main ways for heat to generate liquid water underground, even in planets with frozen surfaces.
A newly discovered exoplanet, LP 890-9c, is providing important insights into conditions at the inner edge of a star's habitable zone. The team's models detail differences in chemical signatures generated by rocky planets near this boundary, based on variables including size, mass, and surface temperature.
The study finds that TRAPPIST-1 c has a extremely thin atmosphere, if it exists at all. The planet's dayside temperature is the coolest ever characterized, suggesting it may be a bare rock with no atmosphere.
Scientists have discovered that stagnant lid tectonics, not plate tectonics, existed on early Earth, releasing heat and forming continents. This finding contradicts previous assumptions about the role of mobile plate tectonics in life's emergence, suggesting an alternative mechanism was present.
Researchers believe Earth's formation was facilitated by the accumulation of small pebbles, resulting in the presence of water as a byproduct. This new theory increases the likelihood of finding habitable planets outside our Solar System.
The CHEOPS satellite has successfully detected two elusive exoplanets, TOI 5678 b and HIP 9618 c, using its precise measurements. The planets have sizes similar to Neptune and Earth radii, respectively, with orbital periods of 48 days and 52.5 days.
New analysis reveals that two-thirds of planets around small stars could be sterilized by tidal forces, leaving one-third with potentially habitable zones. Hundreds of millions of promising targets have been identified for future studies.