Interstellar object 3I/ATLAS is confirmed as a natural comet from beyond our solar system, posing no threat to Earth despite ...

Today is one astronomers, stargazers and alien conspiracy theorists have been waiting for: interstellar comet 3I/ATLAS is as ...

On Dec. 19, 3I/ATLAS will be about 1.8 astronomical units away (170 million miles), almost twice as far as the average ...

Interstellar comet 3I/ATLAS will make its closest approach to Earth on Friday. New X-ray images could shed light on its composition.

Imagine a comet coming from the depths of another star system, causing a lot of talk about aliens coming to Earth. Then ...

The NASA-funded ATLAS survey telescope in Chile found the comet on July 1. The comet was not visible as it raced behind the ...

Interstellar comet 3I/ATLAS is coming nearest to Earth on December 19, and astronomers are eager to welcome it as a Christmas 2025 gift.

A few days ago, an inscrutable interstellar interloper made its closest approach to Mars, where a fleet of international spacecraft seek to unravel the red planet’s ancient mysteries. Several of the ...

This coming autumn brings a thrilling lineup of comets visible from both hemispheres, framed as a “parade of comets” for skywatchers to enjoy—made all the more compelling through coordinated ...