Science ❯ Astronomy ❯ Comets ❯ Interstellar Objects

3I/ATLAS

New Images Show Interstellar Comet 3I/ATLAS Glowing Green With a Hard‑to‑See Tail and Subtle Post‑Perihelion Drift

Spacecraft plus ground telescopes report CO2-rich activity with subtle forces consistent with outgassing.

3I/ATLAS Reappears After Solar Pass With Striking Blue Hue and Fresh Activity

China’s Tianwen-1 Releases Close Images of Interstellar Comet 3I/ATLAS as JPL Flags Non‑Gravitational Acceleration

First Post-Perihelion Images Capture 3I/ATLAS After Sun Passage

Interstellar Comet 3I/ATLAS Reappears to Earth View as Anomalies Drive Push for Faster Data Releases

3I/ATLAS Brightens Unusually and Turns Blue Near the Sun as Data Indicate a Cosmic-Ray–Altered Crust

NASA Rebuts Kim Kardashian’s Moon-Landing Denial, Invites Her to Artemis Launch

After Perihelion, Swift Spots Unexpected Water From Interstellar 3I/ATLAS

Interstellar Comet 3I/ATLAS Reaches Perihelion as Telescopes Await December Return

Interstellar Comet 3I/ATLAS Hits Perihelion as Global Observatories Intensify Monitoring

3I/ATLAS Nears Perihelion During Solar Conjunction as Global Campaign Gears Up

NASA and IAWN Activate Coordinated Tracking of Interstellar Comet 3I/ATLAS Ahead of Perihelion

3I/ATLAS Nears Perihelion as Agencies Coordinate Tracking and Spacecraft Tail-Sampling Opportunities

NASA Confirms Earth’s Temporary Quasi-Satellite as Interstellar Comet 3I/ATLAS Nears Perihelion

Europa Clipper May Skim 3I/ATLAS’s Ion Tail as Interstellar Comet Nears Perihelion

Keck Confirms Anti-Solar Tail and Nickel-Rich Emissions From Interstellar Comet 3I/ATLAS

Water Detected From Interstellar Visitor 3I/ATLAS as Perihelion Nears

Mars Orbiters Capture Closest Views of Interstellar 3I/ATLAS as UV Data Reveal Intense Water Outgassing

Interstellar Visitor 3I/ATLAS Shows Water and CO2 Activity as Mars Orbiters Snag Difficult Views

ESA Mars Orbiter Captures Closest View of Interstellar Comet 3I/ATLAS