[astro-ph.EP] Venus’ ultraviolet (UV) absorbers significantly contribute to the atmosphere’s energy budget. However, the composition of these absorbers remains a mystery.
Clouds
Posted inExoplanets, -moons, -comets
Atmospheric Diversity of Giant Planet Analogs from 3-5µm with SPHEREx
[astro-ph.EP]. The emergent spectra of giant planets peak at thermal infrared wavelengths (3-5um) and possess atmospheric features in this regime that trace carbon chemistry, vertical mixing, clouds, and composition.
Posted inExoplanets, -moons, -comets
CARMApy: An Open-Source Python Framework for Simulating Microphysical Clouds in Planetary Atmospheres
[astro-ph.EP] CARMApy is a new open-source python code that performs bin-scheme microphysical modeling of clouds in exoplanet atmospheres.
Posted inVenus
A Panspermia Origin For Venus Cloud Life
[USRA] Panspermia is the idea that life can originate on one planetary body and then be transferred to other bodies. Impacts are often the suggested method for transfer, as they […]
Posted inExoplanets, -moons, -comets
Radiatively Controlled Thermal Stability of High-Altitude Clouds in Exoplanetary Atmospheres
[astro-ph.EP] One of the most striking findings of exoplanetary science is the ubiquity of clouds. A conventional approach to infer the cloud compositions is to utilize the thermochemical equilibrium model […]
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.
![Final best fit for VHS 1256 b. Top panel: same as Fig. 8, but using the two-column approach. Best fit parameters are Teff = 1153 K, log g = 4.0 dex, [M/H] = 0.08 dex, C/O = 0.60, R = 1.2 RJup, with an α = 0.62 so a linear combination of fsed = 0.7 (62%) in grey dashed and fsed = 2.4 (38%) in grey solid line. Both grey fsed components have been scaled by their proportion and multiplied by a factor of 0.6 for visibility. The two fsed component spectra are shown with reduced resolution for visibility. Bottom panel: same as Fig. 8. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/06/Next-generation.png?resize=1200%2C719&ssl=1)
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Next-generation Exo-REM Atmospheric Models: Application To VHS 1256 b To Emulate Patchy Clouds
Condensate clouds are a defining feature of brown dwarf and exoplanet atmospheres, producing a broad range of colours on the CMD and giving rise to spectral features such as the […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Status Report, Water/Hycean Worlds & Oceanography
Astronomers Observe Exoplanet Atmospheres With New Cloud-detecting Method
Every morning, clouds roll in, and by evening, they have cleared off. This sounds like a weather forecast for a coastal city here on Earth — but it’s for WASP-94A […]
Posted inAtmospheres, Climate, Weather, Biophysics, Biosignatures & Paleobiology, Impact events, Meteorites & Asteroids, Panspermia, Status Report, Venus
A Panspermia Origin For Venus Cloud Life
Decades of study have hinted at the astrobiological potential of Venus’s cloud layers. This potential is often cast as stemming from the idea that the Venusian surface was clement in […]
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Press Release, Venus
Venus’ Atmosphere Jumps And Waves
The mysterious origin of an impressive cloud disturbance on Venus has now been revealed by a team including the University of Tokyo. Researchers used numerical models to show that an […]