恒星間天体

Declassified Pentagon files have reignited the UFO fever, but the cold, hard laws of physics suggest that reaching Earth remains a cosmic impossibility. 6月 01, 2026

Astronomers have observed a steady 16.16‑hour brightness oscillation from interstellar visitor 3I/ATLAS. New analyses show pulsed jets in the coma—not the solid nucleus—are drivin… 12月 02, 2025

NASA will host a live briefing on Nov. 19, 2025 to release new images of the interstellar comet 3I/ATLAS. Here’s when to tune in, what instruments produced the pictures, and what … 11月 18, 2025

New observations of interstellar visitor 3I/ATLAS have revealed an odd chemistry, strange light-scattering and sunward jets — and a debate between natural explanations and calls t… 11月 18, 2025

An unusually large and fast interstellar object, 3I/ATLAS, is generating debate after a Harvard researcher suggested it may be artificial and urged attention to forthcoming observ… 11月 13, 2025