We, humans, are a curious species, always trying to find something more. More than what we know, what we can see, and what we have. Our search for more is endless and it has expanded beyond our planet. In this quest, humanity has tried to contact aliens several times. The quest to talk to the ...

While in restricted airspace, pilots spot an unidentified object performing unusual maneuvers unlike any other military aircraft, in this clip from Season 18, "Alien Air Force." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite The HISTORY ...