Posted inAstronomy & Telescopes, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report

The First Remotely Detected Biosignature May Not Be the Most Common: Implications for JWST and HWO

The first detected member of a new astronomical class is often not representative of the underlying population, but instead reflects the selection effects of the observing technique that found it.

Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Gaia - Planetary Perspectives, Microbiology & Virology, Press Release, Water/Hycean Worlds & Oceanography

Hidden Viruses Reshape One Of Earth’s Largest Carbon Systems

Viruses play a far more active role in Earth’s carbon cycle than previously understood, according to new research that reveals how they infect and control microbes responsible for carbon production […]

Posted inBiochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Imaging & Spectroscopy, Microbiology & Virology, Origin & Evolution of Life, Sample Return, Status Report

Analytical Characterization Approaches to Measure Prebiotically Relevant Compounds in High Salinity Impact-Induced Hydrothermal Systems

Experiments exploring potential emergence-of-life chemistry in a laboratory setting critically depend on simulating realistic early-Earth environments. Such experimental conditions include the implementation of controlled high temperatures and pressures, anoxic gas […]

Posted inAstrochemistry, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Status Report, TRAPPIST-1

Coupled Photochemical-Climate Modeling of Plausible Tenuous Outgassed Atmospheres on the TRAPPIST-1 Planets

Available JWST observations TRAPPIST-1 system have suggested that several of the planets are likely airless, or possess a very tenuous atmosphere.

Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Desert Worlds, Exploration Gear & Tech, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Mars, Missions & Hardware, Robotics/Rovers/UAVs, Status Report

In Situ Carbonation of Sedimentary and Igneous Rocks of Ultramafic Composition in Jezero Crater, Mars

Over 3.5 years of exploration in Jezero Crater, the Perseverance rover has explored several geological units of diverse origins and natures, performing multi-technique remote analyses of the chemistry and mineralogy […]

Posted inAstrogeology, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Lava / magma ocean / Volcanic Worlds, Status Report

Coupling Magma-ocean And Atmospheres In Spectral Retrievals Of Sub-Neptunes

Recent high-precision atmospheric observations with JWST is enabling detailed characterization of sub-Neptune atmospheres and motivating efforts to understand and constrain their interiors.

Posted inAnalog Studies, Arctic / Antarctic / Alpine, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Cryobiology, Exoplanets, -moons, -comets, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Missions & Hardware, Polar / Alpine Expeditions, Press Release

Ice Planet Orbital Recon: Greenland’s Changing Ice

Greenland is the world’s largest island and about 80% of its surface is covered by the Greenland Ice Sheet, the second largest ice mass on Earth after the Antarctic Ice […]

Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Imaging & Spectroscopy, Status Report

Revisiting the Greenhouse Effect of Non-greenhouse Gases in the Atmospheres of Earth-like Planets

Although non-greenhouse gases can vary substantially in abundance in Earth-like atmospheres, their climatic influences remain insufficiently understood.

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