How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here ...

Its closest approach to the Sun will occur around October 30, just inside Mars' orbit, at 1.4 AU, before it continues its ...

The first interstellar object spotted in our Solar System was the cigar-shaped ‘Oumuamua, discovered in 2017 by the ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.

Is the universe communicating with us through the messages of cosmic travelers? The latest find of 3I/ATLAS, an object ...

A comet has entered the Solar System from interstellar space and will pass through the inner planets later this year, NASA ...

Astronomers manning an asteroid warning system caught a glimpse of a large, bright object zipping through the solar system ...

NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

These things take millions of years to go from one stellar neighborhood to another, so this thing has likely been traveling ...

CAPE CANAVERAL, Fla. (AP) — Astronomers say they've spotted an object in our solar system that's believed to be from another ...

The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was a ...