Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Habitable Zones, Microbiology & Virology, Status Report, Water/Hycean Worlds & Oceanography

The Role Of Atmospheric Composition In Defining The Habitable Zone Limits And Supporting E. coli Growth

Studying exoplanet atmospheres is essential for assessing their potential to host liquid water and their capacity to support life (their habitability).

Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Status Report, Water/Hycean Worlds & Oceanography

Ignan Earths: Habitability of Terrestrial Planets With Extreme Internal Heating

Is it possible for a rocky planet to have too much internal heating to maintain a habitable surface environment? In the Solar System, the best example of a world with […]

Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Missions & Hardware, Status Report, Water/Hycean Worlds & Oceanography

Nominations Sought For The Habitable Worlds Observatory Community Science and Instrument Team

Dear Colleagues: NASA is soliciting self-nominations from interested individuals to participate as members of the Habitable Worlds Observatory (HWO) Community Science and Instrument Team (CSIT). As recommended by the 2020 […]

Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Status Report, Water/Hycean Worlds & Oceanography

TOI-421 b: A Hot Sub-Neptune with a Haze-Free, Low Mean Molecular Weight Atmosphere

Common features of sub-Neptunes atmospheres observed to date include signatures of aerosols at moderate equilibrium temperatures (~500-800 K), and a prevalence of high mean molecular weight atmospheres, perhaps indicating novel […]

Posted inAway Teams & Field Reports, Biosignatures & Paleobiology, Exploration Gear & Tech, Habitable Zones, Icy Worlds, Missions & Hardware, NASA Astrobiology Program, Origin & Evolution of Life, People Of Astrobiology, Space Life Science, Status Report, Water/Hycean Worlds & Oceanography

NASA SMD ROSES-24 Update: Interdisciplinary Consortia for Astrobiology Research ICAR Step-2 Proposal Due Date Extended

C.20 Interdisciplinary Consortia for Astrobiology Research (ICAR) seeks proposals focused on ensuring that the NASA Astrobiology community is prepared to respond to the challenge of planning and implementing these missions.

Posted inArctic / Antarctic / Alpine, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Cryobiology, Europa, Icy Worlds, Mapping, Geodesy, Cartography, Bathymetry, Press Release, Water/Hycean Worlds & Oceanography

Ice World Update: Marked Decrease in Arctic Pressure Ridges

In the Arctic, the old, multiyear ice is increasingly melting, dramatically reducing the frequency and size of pressure ridges. These ridges are created when ice floes press against each other […]

Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report, Water/Hycean Worlds & Oceanography

Superhabitable Planets Around Mid-Type K Dwarf Stars Enhance Simulated JWST Observability and Surface Habitability

In our search for life beyond the Solar System, certain planetary bodies may be more conducive to life than Earth. However, the observability of these `superhabitable’ planets in the habitable […]

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