The other two known interstellar comets did not offer such an opportunity.

The night sky is about to reveal a secret that has been drifting through the cold vacuum of space for nearly the entire ...

Harvard's Avi Loeb says a rare sun alignment on 22 January could prove interstellar visitor 3I/ATLAS is an alien spaceship. Read the latest on this cosmic mystery.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Earth could be about to record its fastest-ever rotation.

Earth’s atmosphere is slowly leaking into space, and new research shows some of it reaches the Moon, where it may be ...