Ancient Aliens

In 2021, the United States government broke a 70-year precedent of denying UFOs and released a groundbreaking report on Unidentified Aerial Phenomena.

It is one of the greatest mysteries of the prehistoric world: why did people on nearly every continent erect giant standing stones?

Some of the world's most iconic sacred temples were built atop the ruins of structures that are far more ancient. What compelled early humans to rebuild in the same places again and again? Do these locations hold special power?

Across the globe, high-ranking government officials are openly talking about Unidentified Aerial Phenomena. But why now? Ancient Astronaut theorists suggest the evidence has become too great to ignore--and the truth will soon be revealed.

Some 2,600 years ago, the most sacred relic of the ancient world suddenly disappeared from history: The Ark of the Covenant. Could descriptions of the Ark's incredible power reveal that it was a highly advanced technological device?

In the traditions of native peoples across North America are stories of the Star Ancestors - powerful beings who descended to Earth in the distant past and are sometimes present even today.

Since 2017, the Navy has been releasing photos and videos of Unidentified Aerial Phenomena - and Ancient Astronaut Theorists suggest the incredible images are nearly identical to accounts from centuries ago.

Millions of people around the world have reported encountering shadowy entities who instil fear, shortness of breath, and even paralysis; they could be figments of the imagination or visitors from other worlds or dimensions.

Throughout the ancient world, tales were told of fire-breathing dragons. Though fearsome, they were often worshipped as the bringers of great knowledge and credited as the founders of civilisation.

Today, more people than ever before believe that Unidentified Flying Objects are of alien origin. But if extraterrestrials have come to Earth from lightyears away, could they be capable of bending both time and space?

Ancient Aliens has travelled to many mysterious sites that seem to defy explanation. Giorgio Tsoukalos takes a look back at some of the most incredible structures visited all over the world.

Ancient Aliens has followed investigators across the globe as they've gone directly to the sites where unexplained incidents have been reported. Now, Giorgio Tsoukalos takes a look back at the most extraordinary encounters.

Giorgio Tsoukalos takes a look back at the incredible hieroglyphs, petroglyphs, and geoglyphs that he believes tell a worldwide story.

Giorgio Tsoukalos takes a look back at the most compelling investigations of all, and events that he believes represent real encounters with extraterrestrial visitors.

The team investigates the world's oldest and most incredible relics up close; Giorgio Tsoukalos takes a look at the most mysterious artefacts from all over the globe; he believes they provide undeniable proof of extraterrestrial contact.

Following investigators across the globe as they go to the sites where signs of alien life have been found; Giorgio Tsoukalos takes a look back at incredible evidence that could offer definitive proof that humans are not alone in the universe.