Objets interstellaires : au cœur de l'histoire galactique

3I/ATLAS's Pulsing Jets: A Celestial Heartbeat

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… Déc 02, 2025

Space

Watch NASA Reveal Images of 3I/ATLAS

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 … Nov 18, 2025

Space

3I/ATLAS: Iceberg, Engine, or Enigma?

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… Nov 18, 2025

Harvard astrophysicist urges caution as interstellar object 3I/ATLAS draws scrutiny

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… Nov 13, 2025

objets interstellaires

Articles about objets interstellaires

3I/ATLAS's Pulsing Jets: A Celestial Heartbeat

Watch NASA Reveal Images of 3I/ATLAS

3I/ATLAS: Iceberg, Engine, or Enigma?

Harvard astrophysicist urges caution as interstellar object 3I/ATLAS draws scrutiny