[ESA]. Scientists using the European Space Agency’s Mars Express, in combination with a state-of-the-art meteorological model of the Red Planet, have found that there may be some very exotic physics […]
weather
![Color maps showing statistical uncertainties on the line-of-sight CH3CN Doppler shifts, for four epochs (2016-08-19 to 2022-08-01). Titan’s wireframe grid is shown for each epoch, with the spatial resolution (elliptical beam FWHM) indicated lower left.-- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Temporal-Variability.png?resize=1200%2C735&ssl=1)
Posted inTitan
Temporal Variability of Titan’s Middle-Atmospheric Zonal Winds from Southern Fall to Late Winter (2016-2023)
[astro-ph.EP] Previous ALMA observations have revealed unexpectedly strong and rapid variations in Titan’s high-altitude equatorial zonal winds, which present a challenge to our understanding of this moon’s atmospheric dynamics.
![Observation and modeling of the Arsia Mons Elongated Cloud (AMEC). (A) Observation by the Mars Express VMC imager41,42, at 8.5 a.m. Local Time. (B) Reference simulation assuming only heterogeneous nucleation, at 8.1 a.m. Local Time. (C) Same as B, but with homogeneous nucleation added. See also supplementary video S1.-- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Homogeneous.png?resize=1200%2C720&ssl=1)
Posted inMars
Homogeneous Nucleation of Water Vapor Evidenced by Elongated Clouds on Mars
[astro-ph.EP] It is widely accepted that water vapor forms clouds by heterogeneous nucleation (condensation on pre-existing dry nuclei).
Posted inAtmospheres, Climate, Weather
MarsCast: Transfer Learning Of AI Weather Foundation Models To Planetary Atmospheres
[astro-ph.EP] We investigate the transferability of Earth weather foundation models to planetary atmospheres by adapting the GraphCast graph neural weather forecasting model to Mars. While GraphCast achieves state-of-the-art performance for […]
Posted inMars
Martian Dust Storms May Ggenerate Atmospheric Electrical Conditions That Could Impact Mars Missions
[UAH] A new study by a doctoral researcher at The University of Alabama in Huntsville (UAH), a part of The University of Alabama System, suggests global dust storms on Mars […]
Posted inAtmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Cryobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Status Report, Titan, Water/Hycean Worlds & Oceanography
Modeling the Seasonality of Wind-Driven Hydrocarbon Waves in Titan’s Polar Lakes
Titan, the only body in the solar system aside from Earth with standing liquids on its surface, has high-latitude hydrocarbon lakes and seas. As Titan’s atmosphere generates light winds, there […]
![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 inAI - Data - Apps - Cybernetics, Astrogeology, Atmospheres, Climate, Weather, Desert Worlds, Mapping, Geodesy, Cartography, Bathymetry, Mars, Status Report
Towards a Foundation Model for the Martian Atmosphere
The martian atmosphere hosts dynamical phenomena ranging from planet-encircling dust storms to mesoscale orographic clouds and nocturnal low-level jets.
Posted inAtmospheres, Climate, Weather, Desert Worlds, Magnetic Fields, Electromagnetism, bioelectricity,, Mars, Status Report
Global Evolution Of Electric Fields During Planet Encircling Dust Storms On Mars
Planet-encircling dust storms fundamentally reshape Martian weather and the near-surface electrostatic environment.
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 […]