Only discovered in 2023, Comet C/2023A3 Tsuchinshan-ATLAS is visible through the naked eye right now. It won't return for ...

The coma and long tail of comet Tsuchinshan-ATLAS, also called C/2023 A3 (Tsuchinshan–ATLAS), is currently shining at ...

Astronomy enthusiasts in the U.S. have had the chance to witness stunning celestial events recently. Highlights include a ...

The Oort Cloud is a theorized invisible spherical shell that surrounds the Sun.

Greater Cincinnati stargazers were treated to a rare sight Thursday as a once-in-a-lifetime comet graced the sky.

The ancient comet—dubbed the “comet of the century”—returns to the inner solar system only once every 80,000 years.

ATLAS, not seen since the Neanderthals, is visible in the Alton, Illinois, area. Catch a glimpse before it fades.

How, when, and where to look to see Comet C/2023 A3 (Tsuchinshan-ATLAS) after sunset this Friday, Oct. 18, with sky charts, ...

If you looked up at the sky tonight, you might’ve seen an “ancient” comet that won’t be seen again for tens of thousands of ...

The best comet of the year is starting to fade in brightness, but it’s still an easy naked-eye object in the evening sky.

How, when, and where to look to see Comet C/2023 A3 (Tsuchinshan-ATLAS) after sunset this weekend, on Friday, Oct. 18, ...

Scientists found the Tsuchinshan–ATLAS comet in 2023. Now, it’s here and visible in our sky, even from Chicago. The comet won ...