Interstellar comet 3I/ATLAS is giving planetary scientists something they almost never get: a fresh sample of material from another star system, lit up in ultraviolet like a forensic lamp on a crime ...
Captured by the Gemini Multi-Object Spectrograph on November 26, 2025, this striking green hue replaces the comet's previously observed reddish color.
Interstellar comet 3I/ATLAS made its closest approach to Earth on December 19, 2025, revealing chemical secrets from a ...
Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A family looks in awe as the Comet Tsuchinshan-Atlas, the ...