A pair of once-in-a-lifetime comets are rocketing through our skies right now, and it's a rare treat because they won't be back for hundreds of years. The comets, C/2025 A6 (Lemmon) and C/2025 R2 (SWAN),

An astronomer in Italy caught a fortuitous image of the bright comet Lemmon seemingly entwined with the glowing trail of a "shooting star."

A comet is visiting Earth for the first time in 80,000 years, and you can see it this fall. Comet C/2023 A3, also known as Tsuchinshan-ATLAS, was first discovered in 2023. Its last trip to our planet was witnessed by human ancestors who first ventured ...

Comet Tsuchinshan-ATLAS will round Earth mid-month, but an astronaut on the International Space Station captured amazing photos of it circling the sun. Amanda Kooser Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET.

And you thought your commute was long. A comet that has been on an 81,000-year journey to fly by Earth is finally arriving — and should be visible in our skies in the upcoming days, according to KSNT. The space rock — named Comet C/2023 A3 Tsuchinshan ...

An “ancient” comet that won’t be seen again for tens of thousands of years will be visible Thursday night, after traveling from beyond the solar system to within its closest point to Earth earlier this month, according to NASA. The comet—traveling ...

New research indicates that the water on Comet 67P/Churyumov–Gerasimenko has a molecular signature closely matching that of water found in Earth's oceans. This discovery revives the possibility that Jupiter-family comets like 67P played a role in ...

See Comet Lemmon shine in the skies over England in a new sunset portrait. Award-winning astrophotographer Josh Dury has captured a stunning view of Comet C/2025 A6 (Lemmon) shining in the sky over Somerset in the U.K. ahead of its close approach to Earth on Oct. 21.