Check out these unexplainable theories! See more in this Ancient Aliens compilation. Watch all new episodes Fridays 9/8c; Stream Next Day, 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 ...

Just along the western bank of the Nile River lies the Great Pyramid of Giza, home to multiple chambers. See more in this clip from Season 21, Episode 4, "The Top Ten Unexplained Technologies." Watch all new episodes Fridays 9/8c; Stream Next Day, and stay up to date on all of your favorite ...

Check out these insane times weather manipulation occurred. See more in this Ancient Aliens compilation. Watch all new episodes Fridays 9/8c; Stream Next Day, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

Witnesses are shocked to see a UFO hovering over the blazing California wildfires, see more in this clip from Season 1, Episode 6, "Weeping Mary and the Montana Alien." Watch full episodes of The Proof Is Out There, and stay up to date on all of your favorite The HISTORY Channel shows at ...

Could these mysterious flying objects be extraterrestrials? See more in this #Short from Ancient Aliens. Subscribe for more HISTORY: http://histv.co/SubscribeHistoryYT Check out exclusive HISTORY content: History Newsletter - https://histv.co/newsletter Website - https://histv.co/History ...

If aliens visited Earth in the remote past, could they have given us advanced technology, passed down through human history? And could this technology have helped the Third Reich build mysterious weapons and crafts far beyond the limits of 20th century science? German aerospace engineer Wernher ...

The Great Sphinx in Giza is the largest and most studied monolithic sculpture on Earth, yet it remains one of humanities greatest mysteries. This ancient monolith defies explanation, pre-dates our earliest known civilizations and may hide the secrets of our very origins. While mainstream ...

Check out these mysterious sites. See more in this Ancient Aliens compilation. Watch all new episodes Fridays 9/8c; Stream Next Day, 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 ...

Check out these amazing ancient civilizations. See more in this Ancient Aliens compilation. Watch all new episodes Fridays 9/8c; Stream Next Day, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for ...

Check out these mysterious powers from above. See more in this Ancient Aliens marathon. Watch all new episodes Fridays 9/8c; Stream Next Day, 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 ...

Pilots spot a bright ball over the city, in this scene from Season 4, Episode 17, "UFO Over Pakistan, Antarctic Dino-Whale, & Dead Bird Floating." Watch all new episodes of The Proof Is Out There, Fridays at 10/9c, and stay up to date on all of your favorite The HISTORY Channel shows at ...

Government officials gather a group of scientists to investigate a mysterious UFO crash. See more in this clip from Season 21, Episode 3, "The Top Ten UFO Crashes." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: ...