The interstellar comet 3I/ATLAS is barreling toward its closest point to the sun as perihelion looms on Oct. 29. How different will it look when it reappears on the other side?

When astronomers spotted a glowing object racing through the solar system earlier this year, some wondered if it could be an ...

Comet 3I/ATLAS is warming up as it approaches the sun, causing a jet to emerge. The jet is visible in a dramatic new image.

On 29 October 2025, 3I/ATLAS will reach its closest distance to the sun. Should we worry? Here's what experts say.

I/ATLAS puts the Planetary Defense Network on watch. NASA and ESA say no threat as IAWN drills tracking, while Harvard’s Avi Loeb raises an alien-origin idea.

Two ESA spacecraft, Hera and Europa Clipper, are poised to fly through the long tail of interstellar comet 3I/ATLAS, a new ...

"If the object is an alien spacecraft slowing down, and the anti-tail is braking thrust, then this change from anti-tail to ...

A rare interstellar comet, 3I/ATLAS, is approaching its closest point to the Sun on October 30. Scientists are excited to ...

Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest ...

Scientists have confirmed that 3I/ATLAS is only the third interstellar object ever detected passing through our Solar System.