Check out this astonishing alien evidence! See more in this Ancient Aliens compilation. Watch full episodes 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 Ancient Aliens and other great ...

Ancient astronaut theorists reveal the untold truths regarding Quetzalcoatl - the Mexican God. See more in this clip from Season 21, Episode 7, "Mysteries of the Aztecs." Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at ...

Check out these unexplainable alien phenomena. See more in this Ancient Aliens marathon. Watch full episodes 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 Ancient Aliens and other great ...

Egyptian hieroglyphs depict the use of light bulbs in tombs and secret chambers. See more in Season 5, Episode 3, "Alien Power Plants." Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

Check out these amazing Machu Picchu connections. See more in this Ancient Aliens compilation. Watch full episodes 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 Ancient Aliens and other ...

Ancient astronaut theorists speculate the causes for mysterious disappearances and sightings at Skinwalker Ranch. See more in this clip from Season 21, Episode 8, "The Glowing Orb Phenomenon." Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website ...

Check out these epic doomsday theories. See more in this Ancient Aliens compilation. Watch full episodes 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 Ancient Aliens and other great The ...

Ancient astronaut theorists explain the hollow earth theory. See more in this clip from Season 1, Episode 6, "Mysterious Underground Worlds." Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

A mysterious mountain in northern Italy has stood witness to strange sightings in the sky and unexplainable phenomena for hundreds of years. Could its position on a powerful Earth energy line be attracting extraterrestrial visitors? See more in Season 14, Episode 15, "The Alien Mountain." ...

Check out this epic compilation of Travis Taylor's biggest moments. See more in this Ancient Aliens compilation. Watch full episodes 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 ...

Megalithic monuments linked together by electromagnetic energy... Prehistoric ruins arranged across vast distances in straight lines... And advanced mathematics carved into landmarks more than 5000 years ago. See more in Season 1, Episode 14, "Stargates and Secret Messages." Watch full ...

Researchers in Chicago come to the conclusion that the sophistical of the human brain isn’t just a result of evolution. See more int his clip from Season 1, Episode 4, "Human Genesis." Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at ...