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 will rocket through our skies this October. It's a rare treat, as they won't be back ...

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.

Newly unveiled images of the interstellar object 3I/ATLAS have revealed a spectacular cosmic event, a massive jet of gas and ...

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 ...

Comet Lemmon came closest to the Earth when it was 56 million miles away, but will still be a "fairly bright, fuzzy object" ...