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Chemical Composition

Metallicity Molecular Chemistry Spectroscopy Stellar Evolution Element Formation Volatile Compounds Atmospheric Analysis Nitrogen in Galaxies Solar System Comets Dioxide of Carbon Iron-Rich Gases Volatile Elements Carbon Dioxide Nitrogen in Early Universe Spectrometry Planetary Atmospheres Atmospheric Elements Water in Space Cometary Studies Disequilibrium Chemistry Deuterium Vaporized Metals Molecular Bands Isotopes Carbon-poor Comets Nebular Gas Polycyclic Aromatic Hydrocarbons Atmospheric Studies Stellar Chemistry

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.

Webb Finds Salt Clouds Veiling the Atmosphere of GJ 504 b

Ancient Metal-Poor Stars Found Inside Milky Way’s Disk

JWST Spots Record-Low Metallicity in ‘Forbidden’ Giant Planet’s Atmosphere

JWST Confirms MoM‑z14, Most Distant Galaxy Yet, at Redshift 14.44

Giant Metal-Bearing Cloud Tied to Hidden Companion Explains Months-Long Dimming of Sun-Like Star

JWST Maps Giant Dual Helium Tails Streaming From Ultra-Hot Jupiter WASP-121 b

Astronomers Report Most Metal-Poor Star Yet From the Large Magellanic Cloud

Hubble Spots White Dwarf Devouring Icy, Nitrogen-Rich Exo‑Pluto Fragment