The asteroid, known as 2022 RD2, belongs to a rare class of space rocks called Arjunas. These objects travel around the sun ...

Asteroid 2024 YR4 will not hit Earth, but it has forced planetary defense experts to confront a different kind of worst case: ...

Ukrainian officials say a missile and drone attack killed dozens, right as the U.S. Army secretary arrived to push for peace ...

At this point in history, astronomers and engineers who grew up watching "Deep Impact" and "Armageddon," two movies about the ...