Reverence for the number three dates back thousands of years, and can still be found today in art, architecture, science, literature, and religion. What is it about this number that continues to fascinate mankind? Could this recurring motif contain a profound message? See more in Season 6, ...

Check out these interesting theories surrounding vikings that link to past extraterrestrial activity, see more in this Ancient Aliens compilation. New Season Fri., Feb. 7 at 9/8c; Stream Next Day, and stay up to date on all of your favorite shows on The HISTORY Channel website at ...

Researchers do a deep dive analysis on some strange alien theories, see more in this Ancient Aliens marathon. New Season Fri., Feb. 7 at 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 ...

Check out some of these most shocking moon mysteries, in this Ancient Aliens compilation. New Season Fri., Feb. 7 at 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 big alien invasions, in this Ancient Aliens compilation. New Season Fri., Feb. 7 at 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 Ancient Aliens ...

Bladesmiths in Japan during 700 BC pray to the Gods for guidance while forging a sword so special it's never been seen before, see more in Season 1, Episode 6, "Alien Arsenal." New Season Fri., Feb. 7 at 9/8c; Stream Next Day, and stay up to date on all of your favorite shows on The HISTORY ...

Many historians believe they have spotted something strange in the sky, see more in this clip from Season 1, Episode 2, "Ancient Close Encounters." New Season Fri., Feb. 7 at 9/8c; Stream Next Day, and stay up to date on all of your favorite shows on The HISTORY Channel website at ...

Check out these strange & unbelievable alien theories, see more in this Ancient Aliens marathon. #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our ...

Check out these sacred messages hidden right above our heads, see more in this Ancient Aliens compilation. New Season Fri., Feb. 7 at 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 ...

Colombus has an other-worldly experience as he traverses the Atlantic, in this scene from Season 2, "Ancient Close Encounters." New Season Fri., Feb. 7 at 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. ...

For thousands of years, there have been places around the world considered dangerous to humans. Might these locations hold the key to an otherworldly connection? See more in this marathon from Ancient Aliens. New Season Fri., Feb. 7 at 9/8c; Stream Next Day, and stay up to date on all of your ...

From the beginning of recorded history, humans have told stories about beings with super-human strength, super-sonic speed, and supernatural abilities. See more in this marathon from Ancient Aliens. New Season Fri., Feb. 7 at 9/8c; Stream Next Day, and stay up to date on all of your favorite ...