Conditions are near-perfect to spot this celestial visitor, which won't appear again in our night sky for another millennium.

Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere. Both hail ...

There's a new comet in the night sky over Connecticut, and it might soon be bright enough to be seen with the naked eye. The comet, named Comet Lemmon (or C/2025 A6) after the Mount Lemmon Survey in ...

Comet C/2025 A6 (Lemmon) is just weeks away from a close approach to Earth that could make it visible to the naked eye in the ...

"Current models are showing the [Lemmon] comet will likely peak between 3.5 and 4.5 magnitudes when it is nearest to Earth on October 21, which is dimmer than what they showed last week," Saint Louis ...

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

A new comet was discovered in early September, now it could start becoming visible this month for skywatcher.

Though it won't become any brighter, Comet SWAN will reach its closest point to Earth on Oct. 20, coming within 24 million ...

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than ...

Gianluca Masi from the Virtual Telescope Project captured imagery of comet C/2022 E3 (ZTF). The comet's closest approach to ...