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 ...

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

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 nun discusses the debate on UFOs, suggesting they may be linked to spiritual forces rather than extraterrestrial beings, ...