Watch Ancient Aliens

Add to Watchlist

In this series, investigators looks for evidence to back up theories that aliens visited Earth long ago and helped humans to build advanced civilizations. Also addressed is the possibility that aliens are still around, but their presence is being kept secret by a shadowy global conspiracy.

Ancient Aliens is a series that is currently running and has 16 seasons (198 episodes). The series first aired on April 20, 2010.

Where do I stream Ancient Aliens online? Ancient Aliens is available for streaming on History, both individual episodes and full seasons. You can also watch Ancient Aliens on demand at Amazon Prime, Netflix, Amazon, Hulu, History, Vudu, FuboTV, Microsoft Movies & TV, Sling, Google Play, Hoopla, iTunes, Philo, IMDb TV, Peacock online.

Friday 9:00 PM et/pt on History
16 Seasons, 198 Episodes
April 20, 2010
Documentary & Biography
Cast: Robert Clotworthy
Watch Episodes

Ancient Aliens Full Episode Guide

  • Rebellious angels, giant hybrid beings, and humans taken up to a heavenly realm above the Earth. Is it possible that The Book of Enoch was stricken from the Bible because it documents humanity's extraterrestrial origins?

  • Ancient Cultures throughout the Mediterranean recorded stories of enormous beings that descended from the sky. Could massive megalithic structures and reported discoveries of towering human-like skeletons reveal that this part of the world was once inhabited by giants?

  • The mysterious symbol of the keyhole exists in mystic texts, sacred architecture and ancient artwork found all over the planet. Investigating if this cryptic shape could represent a profound connection to the cosmos. And if it is a clue that was left behind by extraterrestrials who visited Earth thousands of years ago.

  • According to early Tibetan traditions, hidden high in the Himalaya Mountains is a kingdom of the gods - Shambhala. It is discussed if it is possible that this mystical realm truly exists and can be reached through ancient practices.

  • In numerous sacred traditions, the number twelve holds a divine significance. It can be found repeated in ancient architecture, groups of twelve wisdom keepers, and even the latest scientific principles. Could this divine number be part of an alien code left for humanity to decipher?

  • The White House has consistently denied having any knowledge of alien craft visiting Earth, but presidential encounters with UFOs and other strange phenomena can be found going all the way back to George Washington. It is discussed whether it is possible that extraterrestrials have been monitoring and even influencing America's presidents.

  • Nestled within a remote valley in Utah is a ranch that some believe is a hotbed of strange, inexplicable phenomena including terrifying creatures, paranormal apparitions, and lights in the sky. It is discussed whether the bizarre activity could have a connection to an alien entity known as the Skinwalker.

  • Could ancient and modern-day alien abduction stories prove that alien shapeshifters are real?

  • Shocking new evidence reveals that advanced civilizations might have existed on Earth tens of thousands of years ago.

  • The allegations that the U.S. government is plotting with space aliens.

  • The Chilean government questions whether new footage from a Navy helicopter indicates a connection to geoglyphs in the Atacama Desert.

  • In 1947 the U.S. military collected the debris of what they claimed was a crashed weather balloon outside of Roswell, New Mexico. But new evidence may prove the conspiracy theorists right--that the wreckage actually belonged to an extraterrestrial spacecraft.

  • A look into the man-made islets in Nan Madol and the mysteries they hold.