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Planetary Geology

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Reanalysis of Galileo Data Finds Ammonia on Europa Near Surface Fractures

A 2.20‑micron spectral signal points to freshly emplaced ammonia-bearing materials that will guide Europa Clipper follow-up.

Far-Side Moon Samples Link South Pole–Aitken Impact to Lunar Asymmetry

Study Finds Europa’s Seafloor Likely Inactive, Undercutting Hopes for Present-Day Life

Perseverance Cleared for Years More on Mars, On Track to Top Rover Distance Record

New Study Recasts Titan’s Interior, Challenging Idea of a Global Ocean

Titan May Lack a Global Ocean, Cassini Reanalysis Points to a Slushy Interior With Isolated Water Pockets

Perseverance Cleared for Years More Mars Driving With New Push Toward 'Lac de Charmes'

NASA’s HiRISE Marks 100,000th Mars Image With Syrtis Major View

JWST Finds Strong Evidence of a Thick Atmosphere on Molten Super-Earth TOI-561 b

Study Challenges 'Ice Giant' Label for Uranus and Neptune

Perseverance Confirms 55 Tiny Electrical Sparks in Martian Dust Storms and Devils

Perseverance Finds Kaolinite in Jezero, Pointing to Long-Lived Rain on Ancient Mars

Ribose and First Extraterrestrial Glucose Confirmed in Bennu, Along With Gum-Like Organic and Rare Stardust

Bennu Samples Reveal Bio-Essential Sugars, 'Space Gum' and Supernova Dust in New Studies

ESA Mars Express Reveals 'Butterfly' Crater Carved by Low-Angle Impact

Perseverance Records First Direct Evidence of Martian Electrical Activity

Perseverance Records First Direct Electrical Discharges on Mars

Perseverance Records First Direct Evidence of 'Mini-Lightning' on Mars

New SHARAD Readings Weaken Mars South Pole ‘Subglacial Lake’ Claim

New MRO Radar Maneuver Undercuts Mars South Pole ‘Lake’ Claim