Check out these top secret alien crashes in this compilation from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from ...

Aren’t There Plenty of Other Explanations for UFOs? Weather Phenomena, Secret Planes, Hysteria, or Plain Old Hoaxes... We may want to believe in these explanations, but now even the Pentagon is reporting mysterious objects in the sky! This year, residents of the United States have been ...