Objet interstellaire

Interstellar Object Glows — Scientists Baffled

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; a… Fév 17, 2026

Technology

3I/ATLAS Is Not an Alien Probe

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 enginee… Jan 13, 2026

Space

Europa Clipper Eyes 3I/ATLAS

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 coordinate… Jan 09, 2026

Space

CIA’s Cryptic Answer on 3I/ATLAS

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 cal… Jan 08, 2026

Space

Why 3I/ATLAS's 'Non‑Gravitational' Kick Matters

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 comet,… Déc 17, 2025

Physics

3I/ATLAS's Moving Anti‑Tail Deepens Mystery

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 Dec… Déc 15, 2025

Space

UN Confirms 3I/ATLAS as Official Planetary-Defence Exercise

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 humani… Nov 27, 2025

Science

Musk: 3I/ATLAS Could Threaten Humanity

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. Scientist… Nov 17, 2025

Space

Interstellar Comet 3I/ATLAS Enters Solar Conjunction Ahead of Perihelion

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 hypot… Nov 12, 2025

objet interstellaire

Articles about objet interstellaire

Interstellar Object Glows — Scientists Baffled

3I/ATLAS Is Not an Alien Probe

Europa Clipper Eyes 3I/ATLAS

CIA’s Cryptic Answer on 3I/ATLAS

Why 3I/ATLAS's 'Non‑Gravitational' Kick Matters

3I/ATLAS's Moving Anti‑Tail Deepens Mystery

UN Confirms 3I/ATLAS as Official Planetary-Defence Exercise

Musk: 3I/ATLAS Could Threaten Humanity

Interstellar Comet 3I/ATLAS Enters Solar Conjunction Ahead of Perihelion