In space, no one can hear you scream...but your neighbors might when they see you've got a 6-foot alien in your front yard.

The History Channel paranormal expert was just 53 years old.

Earth is dotted with humongous, human-made structures that, to an alien eye, may be tell-tale signs of intelligent goings-on.

Before collecting any fragments of alien spaceships, you must complete a routine safety assessment – according to the UFO ...