Science ❯ Astrophysics

Planetary Atmospheres

Chemical Composition Gas Giants Atmospheric Loss Atmospheric Composition Atmospheric Studies Magnetic Fields Auroras Weather Patterns Mars WASP-127b Methane Chemistry Hydrogen Dominance Habitability Atmospheric Dynamics Transmission Spectroscopy Volatile Species Mars Atmosphere Evolution Hydrogen-rich Atmosphere Hydrogen Atmospheres Thermal Dynamics Thermal Dissociation Temperature Effects Convection Thermal Emission Extreme Weather Radiation Effects Heat Generation Temperature Measurements Mercury's Environment Ultra-Hot Jupiters Temperature Variations Weather Dynamics Atmospheric Erosion Water Distribution Saturn's Rings

JWST Detects Atmosphere and Reheating of Giant Planet Orbiting a White Dwarf

The Webb spectrum reveals aerosols, hydrocarbons and a ~400 K temperature that models say came from a migration‑driven reheating billions of years after the host star died.

Webb Resolves Dawn and Dusk on Hot Jupiters

JWST Maps Dawn–Dusk Contrast on Ultra‑Hot Jupiter WASP‑121 b

JWST Reveals Dark, Airless Surface on Rocky Exoplanet LHS 3844 b

Cassini Data Show Saturn’s Magnetic Cusp Is Skewed Toward Dusk

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

Saturn’s Rings Nearly Vanish This Weekend as Earth Hits Edge-On View

Gas Giant HIP 67522 b Triggers Intense Stellar Flares, Accelerating Its Atmospheric Loss

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

Webb Images One of Coldest Exoplanets in Chaotic Misaligned System

Saturn-Sized Exoplanet Orbits Record-Low Mass Star, Challenging Formation Theories

JWST spots silicon monoxide and methane in WASP-121b’s atmosphere, revealing its icy origins