A rare green comet known as C/2025 A6 (Lemmon) passes Earth for the first time in over 1,300 years, National Geographic said.

Astronomer Gianluca Masi and his Virtual Telescope Project will host a special livestream on Oct. 24 beginning at 1:30 p.m.

A rare encounter of two comets this week will have stargazers in awe after nearly a year of no easily seen comets.

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 ...

A NASA-backed planetary defense group has reportedly begun efforts to pinpoint comet 3I/ATLAS after it was observed emitting ...

They sky is filled with celestial treats this month, including a close Earth-approach by two comets. Can you see in NJ?

It's a weekend double cosmic treat! Comets Lemmon and SWAN are making a close approach to Earth. Can you see it in NJ? Timing, tips, more.

Skywatchers can catch a rare glimpse of Comet Lemmon this month, and it won't be back until around the year 3175. Here's how ...

Short-period comets get close to the sun much more often than their long-period kin, and every time they do, they deplete ...

A rare interstellar comet, 3I/ATLAS, is approaching its closest point to the Sun on October 30. Scientists are excited to ...