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

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House scientific advisory council on UFOs.

Find out how this star appeared on Friends for free after losing a major bet while filming with Matthew Perry.

When you think about the level of detail and labor that goes into a feature-length stop-motion film, it boggles the mind.