Comets SWAN and Lemmon will both swing by Earth and appear bright in the sky near the end of October. Here’s how to see them.

The comets, named C/2025 A6 (Lemmon) and C/2025 R2 (SWAN), are visible from the Northern Hemisphere as their orbits take them ...

C/2025 A6 (Lemmon) is the brightest of the three and was discovered on Jan. 3, 2025 by astronomers using the Mount Lemmon telescope near Tucson, Ariz. Initially, it wasn't expected to become ...

Comets Lemmon and SWAN are now becoming visible. Although they will get brighter next week, you can glimpse them now using ...

Skywatchers are anticipating prime viewing conditions for an annual showing of shooting stars and two comet flybys ...

This newly discovered comet could soon glow bright enough for the naked eye as it sweeps through October's morning and ...

Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest ...

Comet Lemon will be in the heart of the constellation Boötes, the Herdsman, as it makes its closest approach to Earth on Oct.

The European Space Agency's two Mars orbiters take their shot at getting pictures of the exotic interstellar comet 3I/ATLAS.

Perplexity makes its $200 AI browser Comet free worldwide, challenges Chrome, and launches Comet Plus with major publishers ...

For millions of years, a frozen traveler drifted in silence through the stars, carrying secrets from another world. This ...