UFOs

Ancient astronaut theorists speculate the causes for mysterious disappearances and sightings at Skinwalker Ranch. See more in this clip from Season 21, Episode 8, "The Glowing Orb Phenomenon."

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

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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.

The Sumerians in ancient Mesopotamia achieved over one hundred "firsts" for human civilization. Advances in writing, agriculture, science, mathematics, medicine, astronomy, transportation, building, military, schools and city planning, all originated in Sumer. See more in this marathon from Ancient Aliens.

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.

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.

Egyptian hieroglyphs depict the use of light bulbs in tombs and secret chambers. See more in Season 5, Episode 3, "Alien Power Plants."

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.

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.

Check out these epic alien crashes. See more in this Ancient Aliens compilation.

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.

Subscribe for more HISTORY:
http://histv.co/SubscribeHistoryYT

Check out exclusive HISTORY content:
History Newsletter – https://histv.co/newsletter
Website – https://histv.co/History
Facebook – https://histv.co/Facebook
TikTok – http://bit.ly/4kZKjXi

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.