When the Hubble Space Telescope snapped a photo of the Sombrero Galaxy 20 years ago, it resembled a hat, with a brim and ...

Comet Tsuchinshan-ATLAS can still be seen tonight, but you will likely need binoculars because it’s no longer a bright, naked-eye object in the post-sunset sky. However, as well as now being ...

A recently discovered comet that some stargazers had hoped to see during Halloween week has disintegrated before the day of ghosts and ghouls. NASA confirmed Tuesday its sun-observing spacecraft ...