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

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 ...

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

Comet C/2025 K1 (ATLAS) fragmented after its October 2025 solar approach, with telescope observations documenting multiple ...

The comet 3I/ATLAS will soon make its closest approach to Earth. The comet, which was initially believed to be an alien spacecraft, was first discovered on July 1, 2025, by the Asteroid ...

Add Yahoo as a preferred source to see more of our stories on Google. 3I/Atlas, a rare interstellar object that had some astronomers wondering whether it's a spacecraft, will soon reach its nearest ...

Comet C/2024 E1 (Wierzchos) will reach perihelion during a close solar approach on January 20, 2026, increasing brightness and defining its visibility timeline.

Comet C/2025 K1 ATLAS, a relatively new visitor from the outer solar system, has broken apart after swooping close to the Sun ...

Editor’s note: Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. (CNN) — The Hubble Space Telescope and ...

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