A theory as to why we haven't heard from aliens which renowned theoretical physicist and cosmologist Stephen Hawking agreed with has resurfaced online. Planet Earth is about the size of a speck of ...

Steven Spielberg's eerie 'Disclosure Day' trailer has ignited alien theories online. Is it hinting at hidden extraterrestrial ...

Interstellar comet 3I/ATLAS makes its closest approach to Earth this week, sparking alien theories and global interest as ...

Giorgio A. Tsoukalos talks about the Alien Astronaut Theory & the new episodes of "Ancient Aliens" on The History Channel.

SYDNEY — From a hijacking to an alien abduction, countless theories have arisen about the fate of the Malaysian airliner that disappeared nearly two years ago. With search crews just months away from ...