Computer hacker uncovers proof that the U.S. government is working with extraterrestrial beings. See more in this scene from Season 19, Episode 7, "Close Encounters of the Fifth Kind." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. ...

These giant creatures could have been walking among us. See more in this Ancient Aliens compilation. Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other great The ...

The vast Alaskan wilderness is well known for mysterious disappearances, electromagnetic anomalies, stories of strange creatures, and is a hotspot for UFO sightings. Could Alaska's many mysteries be due to a presence that is not of this world? Find out in this clip from Season 19, Episode 8, ...

Did extraterrestrials build the Sacred Temple of Jupiter? See more in this #Short from Ancient Aliens. Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other great The ...

You won't believe these connections to extraterrestrial beings and time travel. See more in this compilation from Ancient Aliens. 00:00 -- Wormholes & Space Travel 04:48 -- Time-Traveling UFO Crashes in England 10:07 -- Chilean UFO’s Time Traveling Powers 14:02 -- Insectoid Humans Travel ...

Was this CIA member killed because he wasn't supposed to see something at the base of Mt. Hayes in Alaska? See more in this scene from Season 19, Episode 8, "The Mysteries of Alaska." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. ...

The FAA and CIA did not want the public to know about this. See more in this scene from Season 19, Episode 9, "Aliens in our Airspace." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient ...

How do aliens come to play in certain religious rituals? Find out in this compilation from Ancient Aliens. 00:00 — The Great Extraterrestrial Resurrection 04:52 — SCIENCE VS. RELIGION 07:46 — Tibetan And Kabbalistic Traditions 11:23 — OTHERWORLDLY ANCESTORS UNCOVERED in Religious Texts ...

A pilot has a super strange flying experience with unidentified objects, leaving him in fear of his life. See more in this scene from Season 19, Episode 9, "Aliens in our Airspace." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. ...

Check out these unbelievable links between aliens and the Aztecs. See more in this compilation from Ancient Aliens. 00:00 - Chapter 1 07:18 - Chapter 2 10:59 - Chapter 3 15:28 - Chapter 4 Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at ...

Uncover the secret history of 3 UFO crash sites - and the bizarre phenomena they exhibit, in this Ancient Aliens compilation. Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens ...

Is there evidence of extraterrestrial life in our oceans? See more in this compilation from Ancient Aliens. 00:00 - Secret Underwater Alien Base Found 08:59 - Alien Life in the Ocean 14:34 - Lost Island Discovered in North Atlantic Watch your favorite episodes of Ancient Aliens on The ...