Stay up to date on all of HISTORY's latest premieres at http://history.com/schedule In 2017, astronomers discovered a very strange object traveling through our solar system and ancient astronaut theorists say it could be an alien ship in this clip from Season 13, "The Alien Protocols". ...

Stay up to date on all of HISTORY's latest premieres at http://history.com/schedule Across the ancient world, communities created geoglyphs that directed messages towards the skies. Ancient Astronaut Theorists believe that these designs were actually meant for aliens, in this scene from Season ...

Stay up to date on all of HISTORY's latest premieres at http://history.com/schedule Ancient astronaut theorists suggest a mysterious cosmic egg has been used by aliens to communicate with humans, in this clip from Season 13, "The Desert Codes ". #AncientAliens Subscribe for more from Ancient ...

Stay up to date on all of HISTORY's latest premieres at http://history.com/schedule Learn more about Easter Island and its potential connection to extraterrestrials in this scene from Season 13, "Earth's Black Holes". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY ...

Watch new episodes of Ancient Aliens returning Friday Jan 24, at 10/9c, and stay up to date on all of your favorite History Channel shows at http://history.com/schedule. Has the U.S. Military been digging a network of tunnels under Area 51 to conduct secret experiments? Ancient astronaut ...

Watch new episodes of Ancient Aliens returning Friday Jan 24, at 10/9c, and stay up to date on all of your favorite History Channel shows at http://history.com/schedule. Ancient astronaut theorists insists there are more government sites engaged in extraterrestrial research than ever, in this ...

Watch new episodes of Ancient Aliens returning Friday Jan 24, at 10/9c, and stay up to date on all of your favorite History Channel shows at http://history.com/schedule. Could the Russian Stonehenge actually be a site of alien interaction with mankind? Learn more in this digital exclusive from ...

Watch new episodes of Ancient Aliens returning Saturday Jan 25, at 10/9c, and stay up to date on all of your favorite History Channel shows at http://history.com/schedule. Ancient Astronaut Theorists suggest that Moses may have used extraterrestrial technology to guide the Israelites through the ...

Watch new episodes of Ancient Aliens returning Saturday Jan 25, at 10/9c, and stay up to date on all of your favorite History Channel shows at http://history.com/schedule. Ancient Astronaut Theorists explore how England's Stonehenge functioned as an ancient observatory of the stars - and how ...

Watch new episodes of Ancient Aliens returning Saturday Jan 25, at 10/9c, and stay up to date on all of your favorite History Channel shows at http://history.com/schedule. Carvings on the Menhir stones of Sardinia remind ancient astronaut theorist Giorgio Tsoukalos and treasure hunter Marty ...

Watch new episodes of Ancient Aliens returning Saturday Jan 25, at 10/9c, and stay up to date on all of your favorite History Channel shows at http://history.com/schedule. Marty Lagina is still open to the idea that ancient astronauts visited earth some time ago, but Giorgio has no doubts at ...

In 1974, a Florida man found a myserious metal sphere that moved on its own and would produce strange noises. Learn more about this strange object and theories surrounding it in this digital exclusive from Season 12. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY ...