The astrophysicist has authored a new book about the prospect of nonhuman intelligence in the universe.

Why do we tend to assume that UFOs are crafts carrying alien beings rather than alien beings themselves? How the UFO ...

Senior figures from inside the U.S. military and intelligence world are now openly suggesting that the government has encountered technology and even “biologics” that are not human, even as official ...

Scientists are watching a newly discovered object in space, and most of them agree it's a comet, but not all of them. A Harvard scientist, who believes he's seen proof of alien life before, suspects ...