UFOs

From mysterious symbols carved in stone to ancient texts filled with cosmic wisdom, Ancient Aliens explores whether hidden codes and secret knowledge were left behind by visitors from beyond the stars. See more in this Ancient Aliens compilation.

Ch1 0:00 – Crystal Skulls from Outer Space
Ch2 3:00 – Da Vinci's Alien Encounter
Ch3 8:29 – Encoded Messages Revealed in Crystal Skulls
Ch4 12:00 – Secret Symbols in the Mona Lisa

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

The HISTORY® Channel, a division of A+E Global Media, is the premier destination for historical storytelling. From best-in-class documentary events, to a signature slate of industry leading nonfiction series and premium fact-based scripted programming, The HISTORY® Channel serves as the most trustworthy source of informational entertainment in media. The HISTORY® channel has been named the #1 U.S. TV network in buzz for seven consecutive years by YouGov BrandIndex, and a top favorite TV network by Beta Research Corporation. For a deeper dive, visit history.com or follow @history on Instagram, Twitter, Facebook, YouTube and TikTok.

More than 10,000 crop circles have been reported worldwide, on nearly every continent on earth. Could these strange, elaborate designs be an indication of extraterrestrial communication? In Season 1, Episode 17, "Circles, Rituals and Shamans."

Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule.

#AncientAliens

Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows:
http://histv.co/SubscribeHistoryYT

Find out more about the show and watch full episodes on our site:
https://histv.co/AncientAliens

Check out exclusive The HISTORY Channel content:
History Newsletter – https://histv.co/newsletter
Website – https://histv.co/History
Facebook – https://histv.co/Facebook
Instagram – https://www.instagram.com/history
TikTok – https://www.tiktok.com/@history

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

The HISTORY® Channel, a division of A+E Global Media, is the premier destination for historical storytelling. From best-in-class documentary events, to a signature slate of industry leading nonfiction series and premium fact-based scripted programming, The HISTORY® Channel serves as the most trustworthy source of informational entertainment in media. The HISTORY® channel has been named the #1 U.S. TV network in buzz for seven consecutive years by YouGov BrandIndex, and a top favorite TV network by Beta Research Corporation. For a deeper dive, visit history.com or follow @history on Instagram, Twitter, Facebook, YouTube and TikTok.