A new study examines how much material from the closest star system to Earth will end up in orbit around the Sun, and how ...

Astronauts Sunita Williams and Butch Wilmore are set to return to Earth around March after an extended stay on the ISS since ...

Astronomers have detected the highest-energy cosmic “ghost particle” on record, deep under the Mediterranean Sea. The neutrino, as the subatomic particle is called, was found by researchers at the ...

A massive asteroid is hurtling towards Earth, prompting NASA's warning of a close encounter. Will it strike? What's the ...