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Planetary Atmospheres

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Rocky Outer Planet in LHS 1903 System Upends Planet-Formation Models

A Science paper finds combined TESS–Cheops–ground measurements point to late, gas-poor formation of the system’s fourth planet.

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

NASA Still Without Contact With MAVEN Mars Orbiter After Dec. 6 Blackout

Early JWST Campaign Finds Stellar Noise Hindering TRAPPIST-1e Atmosphere Test

Webb Study Detects Auroral Heating and Sub‑5°C Weather Shifts on Rogue Planet SIMP‑0136

Webb Spots Methane Gas Above Dwarf Planet Makemake

Webb Detects First Silane in Ancient Brown Dwarf, Clarifying Jupiter–Saturn Silicon Mystery

Study Detects Solid Inner Core on Mars, Redrawing the Planet’s Interior

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

Framework for Lava Planet Evolution Secures 100 Hours of JWST Time

James Webb Space Telescope Captures First Exoplanet by Direct Imaging