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Planetary Atmospheres

Uranus Atmospheric Composition Neptune Chemical Composition Ultra-hot Neptunes Auroras Hydrogen and Helium Atmospheres Weather Cycles Salt Clouds Volatile Gases Gas Giants Mass Loss Mechanisms Rocky Planets Formation of Atmospheres CO2-rich Atmosphere Helium and Carbon Atmosphere Helium Escape Early Solar System Comparative Planetology Surface Conditions Atmospheric Characterization Carbon Atmospheres WASP-189 b Magnetism Atmospheric Properties Magma Oceans Mercury Atmosphere

JWST Detects Salt Clouds on the 'Pink Planet' GJ504b

Adding potassium‑chloride or zinc‑sulfide cloud decks to models removes a previously implausible thermal result and shifts conclusions about the object's atmosphere and origin.

JWST Charts Uranus’s Upper Atmosphere in 3D, Exposing Auroral Bands and a Cooling Trend

James Webb Delivers First 3D Map of Uranus’s Upper Atmosphere

Kepler Data Reveal Earth-Size Planet Candidate HD 137010 b Near Star’s Habitable Edge

JWST Reveals Pulsar-Orbiting ‘Lemon’ Planet With Helium–Carbon Atmosphere

Webb Finds Carbon-Rich Atmosphere on Lemon-Shaped Planet Orbiting a Pulsar

Webb Data Point to Thick Atmosphere on Ultra‑Hot Super‑Earth TOI‑561 b

JWST Maps Comet-Like Helium Escape From Super-Puff Exoplanet WASP-107b

Webb Telescope Rules Out Atmosphere on Earth-Sized Exoplanet TRAPPIST-1 d

Five Papers Showcase NIRPS’s Exoplanet Discoveries and High-Precision Performance

Webb Reveals Silicate Clouds and Moon-Forming Disk in YSES-1 System