Ancient Aliens
Sky History
Ancient Aliens
S1-7 and 9-16 streaming
S17 episodes 1-8 streaming until 9 Jan 2026

Ancient Aliens

Investigators circle the globe in search of evidence in their quest to determine whether life on Earth began in outer space and if aliens influenced mankind in ancient times. Did extraterrestrial beings visit Earth and share information about technology and influence human religions? And more importantly, if aliens visited the planet before, will they return? Alien theorists believe that the answer to both questions is a resounding yes.
CastGiorgio Tsoukalos, Erich von Däniken, David Childress

Watch all available episodes of Ancient Aliens

The Disclosure Event
S14 E1 • 41m • HDClosed Captioned Alt TextU

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

Mystery Of The Standing Stones
S14 E2 • 41m • HDClosed Captioned Alt TextU

According to Ancient Astronaut Theorists, the placement of monoliths and their geological makeup could point to extraterrestrial intervention.

Beneath The Sacred Temples
S14 E3 • 41m • HDClosed Captioned Alt TextU

Some of the world's most iconic sacred temples were built atop the ruins of structures that are far more ancient. Do these locations hold powers?

The World On Alert
S14 E4 • 41m • HDClosed Captioned Alt TextU

After decades of secrecy, high-ranking government officials are now discussing UFOs. But why now? Some say the evidence has become too great to ignore.

Recovering The Ark Of The Covenant
S14 E5 • 41m • HDClosed Captioned Alt TextU

Some 2600 years ago, the most sacred relic of the ancient world suddenly disappeared from history. Where did it go and why?

Secrets Of The Star Ancestors
S14 E6 • 41m • HDClosed Captioned Alt TextU

Explore the stories of the Star Ancestors - powerful beings embedded in the traditions of native people across North America that still exist.

Alien Air Force
S14 E7 • 41m • HDClosed Captioned Alt TextU

Since 2017, the Navy has been releasing photos and videos of UFOs. Theorists suggest the images are nearly identical to accounts from centuries ago.

The Shadow People
S14 E8 • 41m • HDClosed Captioned Alt TextU

Millions have reported encountering shadowy entities around the world who instil fear and even paralysis. Are they imaginary, or otherwordly visitors?

Decoding The Dragon Gods
S14 E9 • 41m • HDClosed Captioned Alt TextU

A look at the fire-breathing dragons, appearing in tales throughout the ancient world and worshipped as the bringers of great knowledge.

The Time Benders
S14 E10 • 41m • HDClosed Captioned Alt TextU

As more people open their minds to UFOs and extraterrestrial visits from lightyears away, this episode explores whether aliens can bend both time and space.

On Location: Incredible Structures
S14 E11 • 40m • HDClosed Captioned Alt TextU

Investigate 75 million years of credible evidence suggesting aliens have visited Earth. From cave drawings to phenomena in the skies.

On Location: Extraordinary Encounters
S14 E12 • 40m • HDClosed Captioned Alt TextU

Giorgio Tsoukalos takes a look back at the most extraordinary encounters that, as far as he's concerned, provide evidence of an extraterrestrial presence on Earth.

On Location: Decoding The Alien Glyphs
S14 E13 • 40m • HDClosed Captioned Alt TextU

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

On Location: The Ufo Investigations
S14 E14 • 40m • HDClosed Captioned Alt TextU

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

On Location: Mysterious Artifacts
S14 E15 • 40m • HDClosed Captioned Alt TextU

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

On Location: Evidence Of Alien Life
S14 E16 • 40m • HDClosed Captioned Alt TextU

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 Shinning Ones
S14 E17 • 41m • HDClosed Captioned Alt TextU

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

Secrets Of Inner Earth
S14 E18 • 41m • HDClosed Captioned Alt TextU

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

Journey To Immortality
S14 E19 • 41m • HDClosed Captioned Alt TextU

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

Return Of The Egyptian Gods
S14 E20 • 41m • HDClosed Captioned Alt TextU

A British woman in the 20th century stunned Egyptologists by accurately locating structures and artefacts. Perhaps she had an otherworldly agenda?

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  • About this series
  • Investigators circle the globe in search of evidence in their quest to determine whether life on Earth began in outer space and if aliens influenced mankind in ancient times. Did extraterrestrial beings visit Earth and share information about technology and influence human religions? And more importantly, if aliens visited the planet before, will they return? Alien theorists believe that the answer to both questions is a resounding yes.
  • CastGiorgio Tsoukalos, Erich von Däniken, David Childress
  • GenreScience, Historical, Features, Kids
  • Seasons17
  • StudioSky History

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There are 17 seasons of Ancient Aliens available to stream on NOW.