Science ❯ Astrobiology ❯ Search for Extraterrestrial Life

Planetary Conditions

Chemical Composition of Stars Water Worlds Habitability Greenhouse Effect Life Formation Life-Sustaining Gases Life Age Estimation Water Formation Water in Space

Astronomers Tie Distant Star’s Chaotic Fading to Evidence of a Planetary Collision

Multiwavelength data show visible dimming with an infrared spike, signaling hot debris from an impact.

Study Ties Planetary Habitability to a Narrow Oxygen Window in Core Formation

Lab Experiments Show Sub‑Neptunes Can Make Their Own Water

UC Santa Cruz Model Recasts Sub‑Neptune ‘Steam Worlds’ With Colder, Smaller Interiors