#extraterrestrials

Would it have been physically possible for the ancient Egyptians to build the pyramids? Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedu

Many people have witnessed unidentified flying objects in their lifetime, but most of them turned out to be false alarms. Join us, as we look at the top 20 clearest-looking UFOs in history Caught on camera. ► Subscribe For New Videos! ► https://goo.gl/Upeq

This former space chief suddenly vanished after revealing details about the Galactic Federation. This scientists suddenly vanished after revealed this. As the former head of Israel's space security program, Haim Eshed shook the world when he revealed the e

The ancient engravings in Val Camonica, Italy, depict possible extraterrestrial travel in this clip from Season 18, "Ancient Aliens On Location: Decoding The Alien Glyphs." #AncientAliens Subscribe for more from Ancient Aliens and other great The HI

A group of airmen encounter a UFO from the future, in this clip from 18, "The Time Benders." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the

Ancient Astronaut Theorists believe a group of airmen encountered a UFO from the future, in this clip from 18, "The Time Benders." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: http://histv.co/Subs

Subscribe to TRAILERS: http://bit.ly/sxaw6h Subscribe to COMING SOON: http://bit.ly/H2vZUn Like us on FACEBOOK: http://goo.gl/dHs73 Sirius Official Trailer #1 (2013) - UFO, Extraterrestrials, Alternative Energy Documentary HD We are definite