Discovery

Discovery Articles

Browse all discovery articles about the interstellar visitor 3I/ATLAS

This Interstellar Comet Has a 16-Hour 'Heartbeat' and Scientists Can't Agree What It Means

European telescopes have detected a mysterious 16-hour pulsing pattern in interstellar comet 3I/ATLAS. Is it natural rotation or something more enigmatic?

December 5, 2025

Discovery

Did 3I/ATLAS Deploy a Scout? New Comet SWAN Arrives from Completely Different Direction

When comet SWAN C/2025 R2 was discovered in September 2025, astronomers wondered: could this be a scout released by the mysterious 3I/ATLAS? The answer reveals something even more intriguing about our cosmic neighborhood.

September 23, 2025

Key Facts

Discovery Date

July 1st, 2025

Estimated Size

1 km diameter

Current Speed

N/A

Origin Direction

Constellation Sagittarius

Latest Updates

Stay informed with the newest observations and discoveries

How Scientists Just Shrunk a 'Mysterious Alien Probe' by 750 Times and Killed the Wildest Space Conspiracy Theory of the Decade

20 days ago

This Ancient Interstellar Comet Could Rewrite Everything We Know About Life's Origins... And It's Coming Closer to Earth Than Ever Before

21 days ago

Astronomers Capture First-Ever X-Ray Vision of Mysterious Interstellar Visitor: What They Found Changes Everything

25 days ago