Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Project Hail Mary, Solaris, and The Hitchhiker's Guide to the Galaxy are all among the very best sci-fi books set in space.

With new technologies come new opportunities. And that is especially true in astronomy—with every new advanced telescope, we ...

You are driving alone through a quiet countryside road at dusk when something strange appears in the sky. A sudden white ...

You might think that legendary sci-fi author Arthur C. Clarke would've adored the Star Trek franchise, but that wasn't ...

A polarizing Harvard astronomer has been appointed to lead a Trump administration panel studying UFOs. Avi Loeb is leading a ...