3I/ATLAS : Visiteur interstellaire et anti-queue

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

Space

3I/ATLAS: The Third Interstellar Visitor Reveals 'Hyperactive' Water Production

Data from the SOHO spacecraft has provided a rare look at 3I/ATLAS, the third known interstellar object to enter our solar system. Unlike the mysterious 'Oumuamua, this visitor ex… Jan 24, 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

Physics

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

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

IAWN Campaign to Monitor 3I/ATLAS Prompts Planetary‑Defense Speculation

The International Asteroid Warning Network has announced a global astrometry campaign targeting interstellar comet 3I/ATLAS from late November 2025 through January 27, 2026. The e… Nov 13, 2025

3i atlas

Articles about 3i atlas

Interstellar Object Glows — Scientists Baffled

3I/ATLAS: The Third Interstellar Visitor Reveals 'Hyperactive' Water Production

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

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

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

IAWN Campaign to Monitor 3I/ATLAS Prompts Planetary‑Defense Speculation