NASA is now combining spacecraft chemistry readings with stellar catalog data to trace interstellar comet 3I/ATLAS back to ...

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion ...

Only three objects from beyond our solar system have ever been caught passing through it. The first, 1I/’Oumuamua, arrived in ...

An interstellar comet that recently passed through the solar system may have formed as long as 12 billion years ago, making ...

Astronomers first spotted Comet 3I/ATLAS in June 2025, and it was later confirmed as an interstellar visitor that originated ...

A new study into the 3I/ATLAS interstellar comet points to it having been born as far back as 12 billion years ago in a very ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

Juice observed 3I/ATLAS during perihelion, when Earth-based telescopes could not. Spectroscopic observations measured water ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by ...

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology ...