Watch Ancient Aliens

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.

Friday 9:00 PM et/pt on History Channel
13 Seasons, 160 Episodes
April 20, 2010
Documentary & Biography
Cast: Robert Clotworthy, Giorgio Tsoukalos, David Childress, Jonathan Young
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Ancient Aliens Full Episode Guide

  • As humanity prepares to establish colonies beyond Earth, are we simply actually returning to mankind’s extraterrestrial past?

  • Erich von D niken’s Chariots of the Gods? challenged everything we thought we knew about mankind’s history, suggesting that aliens visited Earth in the distant past. Fifty years after the book’s publication, is he about to be proven right?

  • A look at the possibility of intelligent robots being a threat to humanity or the next step in human evolution.

  • A secret alliance hidden in plain sight. Joint space missions with undisclosed agendas.

  • Ancient astronaut theorists Giorgio A. Tsoukalos and David H. Childress explore a Polynesian land of bizarre figures and forbidden places in search of what could be the ultimate evidence of mankind's extraterrestrial origins.

  • Millions of people around the world have claimed to be abducted by extraterrestrials. Are these extraordinary accounts some form of mass psychological delusion? Or, might these stories actually be true?

  • Treasure hunter Marty Lagina and ancient astronaut theorist Giorgio A. Tsoukalos explore the ancient ruins of Sardinia in the Mediterranean Sea to look for clues of an extraterrestrial past.

  • Was Egypt home to Earth's earliest extraterrestrial visitors? Ancient Astronaut theorist Giorgio A. Tsoukalos explores the latest scientific discoveries at some of the world's most ancient places to find evidence that extraterrestrials visited Egypt in the distant past.

  • Could giant ancient drawings found etched into the desert floor be part of an ancient alien code?

  • How humanity prepares in case of encountering alien life is brought into question.

  • Researches claim there are hidden messages that can be found within the works of Leonardo da Vinci--and other art throughout history--that may reveal an extraterrestrial influence.

  • In 2017, it was revealed that the Department of Defense recently spent millions investigating reports of UFOs. This is the latest disclosure about a series of secret government UFO projects dating back decades, but many of their findings have never been released to the public. Could the truth about an extraterrestrial presence on Earth be part of a UFO Conspiracy?

  • The ancient site of Gobekli Tepe challenges everything modern archaeologists believe about mankind's past. The megalithic stone complex was built over 12,000 years ago, which dates it to 6,500 years before Stonehenge, and 5,000 years before the first known civilization was said to have emerged in Mesopotamia. Mainstream archaeologists believe that humans were roaming the Earth as simple hunter-gatherers at this time, but if so, how could they have built such incredible structures? Might they have had help from a more advanced--perhaps extraterrestrial--civilization? According to Ancient Astronaut Theorists, the site serves as the smoking gun for a lost civilization--one whose survivors may have built the site to preserve important information about otherworldly visitors. Does the site offers clues about our extraterrestrial past that the ancients felt compelled to preserve for future generations?

  • Hundreds of strange disks are discovered in a cave in China that appear to tell the story of an ancient extraterrestrial crash on Earth. Shortly after the disclosure of these artifacts, the disks are confiscated by the Chinese government and dismissed as a hoax. But are they? Ancient traditions from around the world speak of mysterious disk-shaped artifacts that held tremendous power. The Babylonians claimed to have a disk that stood in for their most powerful deity. The Incan leader Pachacuti attributed his rise to a divine disk that fell from the sky. And treasure hunters have been searching for centuries for the acclaimed "Golden Sun Disk" that was hidden from the Conquistadors when they sacked Peru. Ancient Astronaut theorists propose that these disks were more than just sacred objects, and represent some sort of extraterrestrial technology.

  • In Honshu, Japan, stands one of the country's oldest and holiest Shinto shrines, the Ishi-no-Hoden. Carved from a single rock, it appears to hover over a pool of water and depicts a sky ship of stone that the ancient people witnessed descending from the heavens. This is just one of numerous megalithic structures found throughout Japan commemorating a time when the gods, or perhaps, extraterrestrial beings, descended to Earth.

  • Across the globe, over 1.5 billion people believe in reincarnation, the belief that a soul can be reborn into a different body after death.

  • India's Sanskrit texts are filled with incredible stories about advanced technology in the ancient world.

  • Researchers ask if Cloud computing represents the rediscovery of an ancient repository of knowledge known as the Akashic Record; neuroscientist Dr. Dario Nardi measures the brainwaves of Dr. Deepak Chopra as he enters a state of deep meditation.

  • A roll of film surfaces containing pictures of a memo informing president-elect Dwight Eisenhower about the existence of a top-secret group of scientists, government officials and military personnel who investigate reports of UFOs.

  • The ancient Aztec site of Teotihuacan in central Mexico is explored as the possible remnants of a highly advanced, perhaps extraterrestrial, civilization.

  • Theorists speculate about metal artifacts that could provide physical evidence of extraterrestrials visiting Earth in the distant past; in Jacksonville, Fla. a strange metallic sphere falls from the sky; an ancient aluminum wedge baffles historians.

  • Starting in 1947, a series of unexplained events and sightings prompts U.S. government officials to become alien hunters; theorists offer evidence that similar endeavors were made thousands of years ago.

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