From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

Researchers say a biocontainment facility on the Moon could be humanity's last line of defense against potential future alien ...

Science over sensationalism: Tyson says the latest UFO file release offers no new proof of alien visits but is a chance to apply evidence-based thinking. Preparedness mindset: In his new book, Tyson ...

Devils Tower, Wyoming (CNN) — The buzz started in a hay meadow at the foot of a mysterious-looking geological formation. Helicopters and trailers arrived in large numbers, famous faces and a ...

A Catholic nun has weighed in on the long-running debate surrounding UFOs and extraterrestrial life. In a video posted on The ...

As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...

A provocative sci-fi thriller that challenges truths, explores hidden realities, and pushes readers to question belief on extraterrestrial life and unseen force NEW ...

Add Yahoo as a preferred source to see more of our stories on Google. Steven Spielberg on "The Late Show with Stephen Colbert" (CBS) After making so many movies involving aliens — and specifically so ...