Metal spheres found on a Queensland beach are likely space debris, not extraterrestrial. The Australian Space Agency is working with international partners to confirm their origin.

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.

Before his death, Stephen Hawking consistently warned humanity against contacting aliens. As interest in UFOs and little ...

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

"When TESS launched, no one expected it to ever be capable of finding this kind of planet." When you purchase through links ...