Is it possible that ancient structures were designed to function together as part of an energy grid not just here on Earth but as part of a larger one that spans through the universe? #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

A reported curse strikes members of the team that discovered King Tut's tomb. Many believe that this curse was the result of a system of protection installed by extra terrestrials. Learn more in this clip from Season 12, Episode 5, "The Pharaoh's Curse". #AncientAliens Subscribe for more from ...

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! Ancient astronaut theorists claim that mounting evidence suggests reincarnation to be a real possibility in this clip from Season 12, Episode 13, "The Replicants". #AncientAliens Subscribe for more from Ancient Aliens and ...

Join us at AlienCon to see your favorite experts from Ancient Aliens! Biofabrication, the automated production of tissues and organs, is the future of expanding capabilities of the human body in this clip from Season 11, Episode 3, "The Next Humans".#AncientAliens Subscribe for more from Ancient ...