Understanding the physics of planetary magma oceans has been the subject of growing efforts, in light of the increasing abundance of Solar system samples and extrasolar surveys. A rocky planet […]
climate
Posted inAI - Data - Apps - Cybernetics, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Press Release, Terraforming & Geoengineering, Water/Hycean Worlds & Oceanography
Planetary Weather Modeling Advance: GenCast Predicts Earth’s Weather With State-of-the-art Accuracy
Editor’s note: We should all stop every once in a while and remember that Earth – our home world – is a planet too. We have the benefit of living […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Gaia - Planetary Perspectives, Press Release
Rapid Surge In Global Warming Mainly Due To Reduced Planetary Albedo
Rising sea levels, melting glaciers, heatwaves at sea – 2023 set a number of alarming new records. The global mean temperature also rose to nearly 1.5 degrees above the preindustrial […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Comets and Asteroids, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Impact events, Press Release
The Response of Planetary Atmospheres to the Impact of Icy Comets I: Tidally-Locked exo-Earths
Impacts by rocky and icy bodies are thought to have played a key role in shaping the composition of solar system objects, including the Earth’s habitability. Hence, it is likely […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gas Giants, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Status Report
The JWST Weather Report From the Isolated Exoplanet Analog SIMP 0136+0933: Pressure-Dependent Variability Driven by Multiple Mechanisms
Isolated planetary-mass objects share their mass range with planets but do not orbit a star. They lack the necessary mass to support fusion in their cores and thermally radiate their […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Fossils & Paleontology, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, Status Report
Reconstructing Early Microbial Life
For more than 3.5 billion years, life experienced dramatic environmental extremes on Earth. These include shifts from oxygen-less to over-oxygenated atmospheres and cycling between hothouse conditions and global glaciations.
![Spectral flux contributions over the range [1, 25] µm for a surface temperature of (Top) 250 K and (Bottom) 650 K. The white lines delineate the areas where the CFF per spectral band is higher than unity. The spectral range of LIFE and the vertical extent of the cloud are overplotted. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/11/The-Impact-Of-Water-Clouds-On.png?resize=1200%2C716&ssl=1)
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
The Impact Of Water Clouds On The Prospective Emission Spectrum Of Teegarden’s Star b As Observed By LIFE
Non-transiting terrestrial planets will be accessible by upcoming observatories of which LIFE is an example.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Gaia - Planetary Perspectives, Habitable Zones, Mars, Status Report
Behaviors of Martian CO2-driven Dry Climate System and Conditions for Atmospheric Collapses
The present Martian climate is characterized by a cold and dry environment with a thin atmosphere of carbon dioxides (CO2).
Posted inAnalog Studies, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Status Report
Exo-Daisy World: Revisiting Gaia Theory through An Informational Architecture Perspective
The Daisy World model has long served as a foundational framework for understanding the self-regulation of planetary biospheres, providing insights into the feedback mechanisms that may govern inhabited exoplanets.
Posted inArctic / Antarctic / Alpine, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Habitable Zones, Icy Worlds, Press Release, Terraforming & Geoengineering, Water/Hycean Worlds & Oceanography
New Evidence Of When Earth Was Slushy
At the end of the last global ice age, the deep-frozen Earth reached a built-in limit of climate change and thawed into a slushy planet.