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.

The comet broke into pieces after making a close approach around the sun in October 2025.

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 ...

Comet C/2025 R3 may reach rare brightness levels, offering a spectacular (and unpredictable) show before sunrise.

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

All good things end. Since July 1 last year, we have been delighted by knowing an interstellar comet was crossing the Solar System. Telescopes on and around Earth, spacecraft across the Solar System, ...

A newly discovered comet has astronomers excited, with the potential to be a spectacular sight in early April. C/2026 A1 ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A deep image of interstellar Comet 3I/ATLAS captured by the ...

On Friday, an object that formed outside of our galaxy passes close enough to Earth that we have a chance to see it in the night sky. It's taken the astronomy community by storm. What is Comet ...

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

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A deep image of interstellar Comet 3I/ATLAS captured by the ...