Area 51 is a U.S. Air Force Base in Nevada, and has long been the subject of conspiracy theories stemming from the belief that the U.S. government keeps evidence of alien contact on site, including spacecraft and specimens.

A UFO whistleblower claims a giant craft lies hidden in Korea as Barack Obama clarifies his comments on extraterrestrial life.

Is intelligent alien life really out there? With powerful telescopes identifying more potentially habitable planets each year, the possibility continues to grow. But what would happen if we actually made contact, especially if the contact came to us?