Scientists have uncovered new evidence from one of Earth’s most extreme ancient warming events, revealing how the climate may recover long after human-driven CO₂ emissions cease.
Atmospheres, Climate, Weather
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Status Report
Effect Of Tidal Gravity And Planetary Rotation On The Retrieved Atmospheric Abundances Of Close-in Exoplanets
Most modern atmospheric retrievals adopt the simplifying assumption that the planetary atmosphere endures no planetary rotation and stellar tidal effect.
Posted inAstrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Ice Giant, Lava / magma ocean / Volcanic Worlds, Neptune, Status Report, Uranus, Water/Hycean Worlds & Oceanography
Ice Giants Revisited: Uranus And Neptune As Magma Ocean Worlds
Uranus and Neptune are commonly interpreted as volatile-rich “ice giants”, an assumption that underpins most interior models.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, Status Report, Venus
Acidophilic Fungi As Possible Candidates For Living Forms In Venus’ Clouds
Present-day Venus, similar to Earth in terms of relative radius, acceleration of gravity and mean density, is characterised by a very strong greenhouse effect and full cloud cover.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release, Space Stations
The Capability Of CSST In Characterizing Planetary Atmospheres. I. Transmission Spectroscopy Of Hot Jupiters
Transmission spectroscopy has become a primary tool for probing exoplanetary atmospheres, enabling constraints on their chemical compositions and providing limited information on their thermal properties.
Posted inAtmospheres, Climate, Weather, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, Sample Return, Status Report
The Genetic Determinants of Extreme UV Radiation and Desiccation Tolerance in a Bacterium Recovered from the Stratosphere
Microbes that survive transport to and in the stratosphere endure extremes of low temperature, atmospheric pressure, and relative humidity, as well as high fluxes in ultraviolet radiation (UVR).
Posted inAstrogeology, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Desert Worlds, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Mars, Status Report
Coupling Dynamical Accretion And Chemical Differentiation: A Unified Framework For Earth-Mars Diversity
The distinct physical and geochemical differences between Earth and Mars provide fundamental constraints on terrestrial planet formation, yet a self-consistent framework linking dynamical and chemical aspects remains elusive.
Posted inAstrochemistry, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Habitable Zones, Status Report
Reflections of Life: Distinguishing Living from Nonliving Worlds with Complexity Metrics
Detecting life beyond Earth is the primary goal of astrobiology. In this study, we showcase the effectiveness of information and complexity-based metrics for detecting signs of life on exoplanets.
Posted inAtmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Ice Giant, Imaging & Spectroscopy, Missions & Hardware, Status Report, Uranus
Uranus Orbiter and Probe: Mission Challenges and Concept Updates Since the Origins, Worlds, and Life Decadal Survey
Origins, Worlds, and Life: Planetary Science and Astrobiology in the Next Decade identified a Uranus Orbiter and Probe as the highest-priority strategic mission for the decade 2023–2032, as it enables […]
Posted inAstrochemistry, Atmospheres, Climate, Weather, Beta Pictoris, Exoplanets, -moons, -comets, Icy Worlds, Imaging & Spectroscopy, Interstellar, Status Report
13CO And Potential Variability In β Pictoris b With GRAVITY+
The 12CO/13CO ratio was introduced as an indicator for where in the disk a planet has formed. Previously a lower value compared to the host star’s was suggested to show […]