Of the underwater remains of cities that scientists have discovered over the years, could any of them be the lost city of Atlantis? The researchers ponder this question in this clip from Season 12, Episode 6, "The Science Wars". #AncientAliens Subscribe for more from Ancient Aliens and other ...

The researchers run tests on a skull specimen found in South America in this clip from Season 12, Episode 6, "The Science Wars". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full ...

Ancient astronaut theorists ponder the origins of the architects of the ancient Mesoamerican city of Teotihuacan in this clip from Season 12, Episode 7, "City of the Gods". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT ...

Ancient astronaut theorists wonder if the pyramids of Teotihuacan were once electromagnetic power plants in this clip from Season 12, Episode 7, "City of the Gods". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out ...

As only about 10% of Teotihuacan has been excavated so far, ancient astronaut theorists wonder what surprising discoveries await us in this clip from Season 12, Episode 7, "City of the Gods". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

Giorgio Tsoukalos sits down with an investigative journalist to go over what she thinks to be the most informative leaked Majestic Twelve documents in this clip from Season 12, Episode 9, "The Majestic Twelve". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

Theorists propose the possibility that John F. Kennedy was assassinated in order to keep the truth about aliens on Earth from getting out in this clip from Season 12, Episode 9, "The Majestic Twelve". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

Computer hacker, Gary McKinnon, claims to have uncovered undeniable proof of the Majestic Twelve's existence in this clip from Season 12, Episode 9, "The Majestic Twelve". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! Dan Vantari is an ancient Hindu believed to be the father of Ayurvedic medicine. Ancient astronaut theorists ponder whether his advanced knowledge was handed down by aliens in this clip from Season 12, Episode 11, "Voices of ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! An aerospace engineer at UC-Irvine tests an aircraft model that was built using measurements from ancient Hindu texts. Ancient astronaut theorists suggest the texts also contain information on how to build advanced spacecrafts ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! Ancient astronaut theorists believe it's possible that certain creatures, such as the Bombardier Beetle, may have been placed on Earth by aliens in this clip from Season12, Episode 12, "The Animal Agenda". #AncientAliens ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! Ancient astronaut theorists propose that the Earth has played the part of a laboratory for aliens experimenting with creatures in this clip from Season, Episode 12, "The Animal Agenda". #AncientAliens Subscribe for more from ...