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Planetary Atmospheres

Uranus Atmospheric Composition Neptune Ultra-hot Neptunes Mass Loss Mechanisms Surface Conditions Chemical Composition WASP-189 b Gas Giants Comparative Planetology Atmospheric Characterization Helium Escape Magma Oceans Helium and Carbon Atmosphere Carbon Atmospheres CO2-rich Atmosphere Atmospheric Properties Early Solar System Hydrogen and Helium Atmospheres Auroras

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

NIRSpec integral-field measurements of H3+ across nearly a full rotation reveal structure set by Uranus’s tilted, offset magnetic field.

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