Here's everything to know about the James Webb Space Telescope, and what it captured on its three-year anniversary observing the cosmos. To mark Webb's third year of operations, NASA shared an image ...

A newly discovered comet, 3I/ATLAS, may be the most ancient visitor ever detected, potentially older than our solar system itself. Unlike previous interstellar objects, this ice-rich comet seems to ...

Today in the history of astronomy, the most prolific comet-discoverer of all time gets his start.

A mystery interstellar object spotted last week by astronomers could be the oldest comet ever seen, according to scientists.