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Planetary Conditions

Water Presence Atmospheric Composition Life Beyond Earth Liquid Water Atmospheric Chemistry Extreme Environments Atmospheric Retention Carbon Cycle Temperature for Life Mars Habitability Rocky Planets Life Support Systems Temperature Variations Water on Mars Temperature Differences Oxygen Levels

High-Resolution Mars Mapping Points to Arctic-Sized Ocean 3 Billion Years Ago

Researchers traced a coherent ancient coastline by mapping scarp-fronted fan deltas in Coprates Chasma with CaSSIS plus other orbital imagers.

Conference Model Points to Rare, Distant Technological Civilizations in the Milky Way

New UC Santa Cruz Model Explains JWST’s Steam‑Rich Sub‑Neptunes

Seismic Reanalysis Finds Mars’ Mantle Packed With Ancient Impact Debris

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