星际天体

A rare interstellar visitor, 3I/ATLAS, has produced an unexpected sunward glow that has left scientists baffled. New multi‑telescope data shows unusual chemistry and morphology;... 二月 17, 2026

Comet 3I/ATLAS—only the third confirmed interstellar object to visit our solar system—has been scanned by major radio and optical facilities; scientists report no signs of engin... 一月 13, 2026

NASA’s Europa Clipper and other spacecraft have returned ultraviolet views of the interstellar comet 3I/ATLAS, validating flight hardware and mapping gas and dust while coordina... 一月 09, 2026

The CIA issued a Glomar reply to a FOIA request about interstellar visitor 3I/ATLAS, prompting fresh debate about what intelligence agencies may quietly monitor even when NASA c... 一月 08, 2026

Astronomers say interstellar comet 3I/ATLAS experienced a small acceleration that gravity alone can't explain. Here's what the measurements mean, how jets of gas can push a come... 十二月 17, 2025

New images and telescope data show interstellar visitor 3I/ATLAS sporting a rare sunward anti‑tail whose orientation has shifted as the object nears its closest approach on 19 D... 十二月 15, 2025

The UN has formally designated the interstellar comet 3I/ATLAS as the focus of a global planetary-defence drill, turning an unusual cosmic visitor into a real-world test of huma... 十一月 27, 2025

Elon Musk warned on a recent podcast that the interstellar visitor 3I/ATLAS—while almost certainly not aimed at Earth—would be catastrophic if it ever struck the planet. Scienti... 十一月 17, 2025

3I/ATLAS moved into solar conjunction on October 21 and will reach perihelion on October 29; post‑perihelion measurements will help distinguish natural and artificial‑origin hyp... 十一月 12, 2025