HISTORY | Ancient Aliens: Secret Alien Codes Deciphered *3 Hour Marathon* @HISTORY | Uploaded September 2024 | Updated October 2024, 1 week ago.
Why are humans so different from every other species on Earth? Did we evolve from ape--or is our intelligence the result of contact with an otherworldly source? See more in this 3 hour marathon from Ancient Aliens.

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"Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years.

HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.