If you want to see what people are calling "the comet of the century," your last chance is coming up soon, as it will most likely not be visible with the naked eye anymore after this weekend. After ...

Experience the brilliance of comet C/2023 A3, visible nightly this October, with its closest approach to Earth on October 12.

The comet, which will be visible to the naked eye, orbits the sun roughly once every 80,000 years—the last time it passed Earth humans were just migrating out of Africa. Comet A3 seen from Vieques ...

Above: Takaya Okada (Japan) observes Comet C/2023 A3 with his Unistellar EVSCOPE2. In the background you can see the comet tracing its beautiful tail across the sky. These past couple months, ...

To photograph the comet, Alton Spencer left Danbury, finding darker and elevated spots in Bridgewater and Warren.

Comet Lemmon (C/2023 A3) dazzles in Ladakh. This comet has a green tail which is visible from Hanle. This study offers rare ...

Skywatchers of Arizona might not have to wait long to see the first comet of 2025. Comet ATLAS C/2024 G3, also known simply as Comet G3, is currently headed toward the sun on its 160,000-year ...