Interstellar comet 3I/ATLAS is now barreling away from the sun, never to return to the solar system. There's one more chance ...

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.

Comet C/2025 A6 (Lemmon), captured from the Dark Sky Alqueva Observatory in Portugal on October 2, 2025, glows green as it nears its closest approach to Earth. Here’s how to see this rare green comet ...

The interstellar visitor may still have a few things to tell us before it leaves our solar system.

Interstellar comet 3I/ATLAS will soon reach its closest distance to Earth, so this may be our last, best chance to see this rare object before it heads back out into the universe, never to return. One ...

Space, it’s full of surprises. An object, discovered at the beginning of the year, was first thought to be an asteroid. But then it grew a tail. Astronomers with the Mount Lemmon Survey in Arizona ...

Comet C/2024 E1, better known as Wierzchos, is skimming past the Sun in a tight, blazing turn that will fling it back toward ...

Comet Lemmon, a comet discovered in January, may be visible with the unaided eye after sunset this week. Credit: Creators.com illustration It’s been a few years since we’ve seen a decently bright ...

C/2024 E1 (Wierzchos) brightened significantly ahead of its close approach to the sun.

A comet hurtling through the solar system from interstellar space is exactly what it appears to be, NASA officials said Wednesday, moving to quash a wave of online speculation. At a news conference, ...