For decades, a guarded patch of Nevada desert officially did not exist, even as armed men, no-fly zones, spy planes, nuclear tests, and secret runways told a different story. The CIA needed somewhere ...

Australia's space agency said there's a completely rational, albeit cosmic, explanation behind the mysterious orbs that ...

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

Antarctica’s biggest secrets are not alien bases or hidden bunkers, but a buried world scientists are only beginning to map.

For your extraterrestrial viewing needs, Stacker ranked the top 30 alien movies, according to their IMDb user rating.

Before Sheriff Country, Morena Baccarin starred in an ambitious sci-fi remake that almost had an even bigger future.

This new group, which is led by Harvard professor Avi Loeb, aims to advise the Trump administration and the U.S. intelligence ...

Vanity Fair reports from the Capitol Hill conference, where members of a sprawling community of national security experts and ...