Discover the latest findings on interstellar comet 3I/ATLAS, from rare methane detections to high-resolution Hubble images, ...

SPHEREx tracked the interstellar comet as it grew considerably brighter after perihelion.

Interstellar comet 3I/ATLAS's first reported sighting was on July 1, and it's going to be the closest it's ever been to Earth on Friday. Along the way, it reached several milestones leading up to what ...

The breakup was caused by the extreme conditions near the Sun; during its latest approach, C/2025 K1 flew as close as 0.334 ...

Comet 3I Atlas is the third confirmed object ever observed entering the Solar System from interstellar space, News.Az reports ...

Comet 3I/ATLAS, only the third interstellar object ever observed, is making its final pass through our skies, offering a rare last glimpse before vanishing into deep space forever.

That community recently came together to observe Comet C/2023 A3 (Tsuchinshan-ATLAS) as it passed through the night sky. Near ...

A newly discovered visitor from the outer solar system is racing toward the inner planets, and astronomers say it could put ...

A mysterious interstellar comet — just the third such object ever confirmed to have entered our solar system — streaked past Mars last week. A spacecraft in orbit around the red planet had a front-row ...

It's possibly as big as Manhattan, likely older than our own solar system and it's traveling through space at speeds of up to 153,000 miles per hour. It's also only the third confirmed interstellar ...