Join us at AlienCon to see your favorite experts from Ancient Aliens! Ancient astronaut theorists believe pyramids could've even been built on Antarctica and been mistaken for naturally-occurring structures in this clip from Season 11, Episode 1, "Pyramids of Antarctica". #AncientAliens ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! Ancient astrounaut theorists ponder whether the texts found in an ancient Egyptian temple describe a past natural event or a purposeful attack from an other-worldly civilization in this clip from Season 11, Episode 1, ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! Ancient astronaut theorists believe the Nazis may have established an intricate underground headquarters in the Arctic in this clip from Season 11, Episode 1, "Pyramids of Antarctica". #AncientAliens Subscribe for more from ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! Some scientists believe that terraforming the surface of Mars to make it more Earthlike is the best plan for growing food in this clip from Season 11, Episode 2, "Destination Mars". #AncientAliens Subscribe for more from ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! Ancient astronaut theorists believe that humans on Earth actually originated from Mars and that these "fallen angels" are spoken of in ancient Hebrew texts in this clip from Season 11, Episode 2, "Destination Mars". ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! Ancient astronaut theorists believe Mars is scattered with the ruins of an ancient civilization and that Rover's images have deliberately been dulled in order to obscure evidence in this clip from Season 11, Episode 2, ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! The idea of transhumans, or artificially enhanced humans, is shown to have been around for a very long time in this clip from Season 11, Episode 3, "The Next Humans". #AncientAliens Subscribe for more from Ancient Aliens and ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! Transhumanists believe our bodies will soon be home to nanomachines so that humans can live much longer, healthier lives in this clip from Season 11, Episode 3, "The Next Humans". #AncientAliens Subscribe for more from Ancient ...

Some believe that Arkaim might have been utilized by extraterrestrial beings when it was constructed in this clip from Season 11, Episode 12, "Russia's Secret Files". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out ...

Cosmonauts aboard the Russian space station Salyut 7 report having seen creatures reminiscent of angels in space in the past in this clip from Season 11, Episode 12, "Russia's Secret Files". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

Some say that the Roswell UFO crash is not the only one to have had witnesses in this clip from Season 11, Episode 13, "Beyond Roswell". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch ...

Roswell researchers suggest that the government sanctioned a bond of secrecy, preventing witnesses of the Roswell UFO crash retrieval from coming forward publicly in this clip from Season 11, Episode 13, "Beyond Roswell". #AncientAliens Subscribe for more from Ancient Aliens and other great ...