Comets Lemmon and SWAN are nearing Earth in a rare double cosmic treat. Where and what time can you see them? What to know.

Two decently bright comets that share a superficial resemblance are gracing our skies right now, in fact: C/2025 A6 (Lemmon) ...

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

Comet Lemmon's nucleus is believed to be just a couple of miles in diameter. This is relatively small compared to other ...

The cosmic snowball, made up of frozen gases, dust and rock, is hurling past Earth at around 135,000 mph. Its orbital period ...

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

This week's night sky will include a new comet that hasn't flown past Earth in over a thousand years -- and it won't be ...

An astrophotographer snapped a stunning shot of Comet Lemmon's flowing tail getting shredded by a strong gust of solar wind, ...

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

For those of you who like interesting night sky phenomena, there are actually two comets that are visible right now. Comet ...

Tonight, the sky will light up with a rare spectacle. Two bright green comets, C/2025 A6 (Lemmon) and C/2025 R2 (SWAN), are ...

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