![WASP-39b transmission spectra and cloud scenarios. Spectra are observed with JWST (orange), HST (magenta), and VLT (green) in comparison to models with different Fe content: full IWF Graz cloud model (black line), Fe[s] replaced (dark gray), FeS[s] replaced (middle gray), and all Fe-binding materials replaced (light gray). The Fe-free mixed-material cloud compositions provide a good fit in the near-IR but not in the optical. — astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/04/Exoplanet-climate.png?resize=1200%2C718&ssl=1)
Context. Space missions such as CHEOPS, JWST, and PLATO facilitate detailed characterization of exoplanets, particularly close-in gas giants and their wide range of global temperatures and climate regimes.
tidally locked
Posted inAI - Data - Apps - Cybernetics, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Proxima Centauri, Status Report, TRAPPIST-1, Water/Hycean Worlds & Oceanography
Ecological Modelling Of Hycean Worlds
New observations are opening the possibility of characterising habitable environments in exoplanetary systems, with the recent example of the candidate hycean world K2-18 b.
Posted inExoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, TRAPPIST-1
The Influence Of Hypothetical Exomoons On Planetary Thermal Phase Curves
More than 200 moons exist in our Solar System, yet no exomoon has been confirmed to date. While the innermost two planets of the Solar System lack natural satellites and […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Status Report
Atmospheric Collapse And Habitability On Tidally-Locked Exoplanets
The habitability of terrestrial exoplanets orbiting M dwarfs is a key topic in the search for extraterrestrial life.
Posted inAnalog Studies, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Status Report
The Response of Planetary Atmospheres to the Impact of Icy Comets III: Impact Driven Atmospheric Escape
In an Earth-analogue atmosphere, water vapour is a key carrier of hydrogen in the lower atmosphere with its transport above the tropopause controlling the atmospheric hydrogen escape rate.
Posted inExoplanets, -moons, -comets, Moon, Press Release
Initial Conditions For Tidal Synchronisation Of A Planet By Its Moon
Moons tidally interact with their host planets and stars. A close moon is quickly synchronised by the planet, or becomes captured in a higher spin-orbit resonance.
Posted inAI - Data - Apps - Cybernetics, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Gas Giants, Status Report
Accelerating Exoplanet Climate Modelling: A Machine Learning Approach To Complement 3D GCM Grid Simulations
With the development of ever-improving telescopes capable of observing exoplanet atmospheres in greater detail and number, there is a growing demand for enhanced 3D climate models to support and help […]
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Lava / magma ocean / Volcanic Worlds, Press Release, TRAPPIST-1
From CO2- to H2O-dominated Atmospheres And Back — How Mixed Outgassing Changes The Volatile Distribution In Magma Oceans Around M Dwarf Stars [TRAPPIST-1]
We investigate the impact of CO2 on TRAPPIST-1 e, f and g during the magma ocean stage. These potentially habitable rocky planets are currently the most accessible for astronomical observations.
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Space Weather & Heliophysics, Status Report
Impacts Of Tidal Locking On Magnetospheric Energy Input To Exoplanet Atmospheres
We investigate the effect of planetary corotation on energy dissipation within the magnetosphere-ionosphere system of exoplanets.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report, Stellar Cartography, TRAPPIST-1, Water/Hycean Worlds & Oceanography
Effects of Transient Stellar Emissions On Planetary Climates Of Tidally-locked Exo-earths
Space weather events in planetary environments sourced from transient host star emissions, including stellar flares, coronal mass ejections, and stellar proton events, can substantially influence an exoplanet’s climate and atmospheric […]