The following are the top 5 instances of government cover-ups regarding alien activity. 00:00 The Navy, Nuclear Weapons and UFOs 04:15 Inexplicable Flying Objects 08:41 US Government Sees More than We Know 12:34 Project Blue Book Attempts to Prove UFO Phenomenon 16:47 The Roswell ...

Is it possible that the bones of giants have been hidden from the public? See more in this scene from Season 4, Episode 22, "Mysterious Monoliths." Watch all your favorite episodes of The UnXplained, and stay up to date on all of your favorite The HISTORY Channel shows at history.com/schedule. ...

On New Year's Eve, 1982, several witnesses claim they saw UFO's in the sky, in this scene from Season 19, Episode 1, "UFO Hotspots." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

Throughout history, spiritual leaders known as shamans have healed, protected and advised their people. But are they simply putting on elaborate ceremonies? See more in Season 7, Episode 6, "The Shamans" Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY ...

These shocking UFOs have been spotted over some of the biggest cities in the U.S. See more in this compilation from The Proof is Out There. #TheProofIsOutThere Subscribe for more from The Proof Is Out There and other great shows from The UnXplained Zone: ...

These mysterious formations have been appearing in farmer's fields for centuries. See more in this scene from Season 19, Episode 2, "The Crop Circle Code." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. ...

These UFO's seem to be attracted to volcanoes due to their heat emissions. See more in this scene from Season 3, Episode 7, "Witch's Broomstick, UFOs vs. Volcanoes, and Oakville Blobs." Watch all your favorite episodes of The Proof Is Out There, and stay up to date on all of your favorite The ...

France is a major hotspot for UFO activity. See more in this scene from Season 19, Episode 1, "UFO Hotspots." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient ...

These mysterious formations have been appearing in farmer's fields for centuries. See more in this #Short from Season 19, Episode 2, "The Crop Circle Code." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. ...

In recent years, there have been many sightings of UFOs over Miami. See more in this scene from Season 1, Episode 4, "UFOs." Love watching The Proof Is Out There: Bermuda Triangle Edition? Stay up to date on all of your favorite The HISTORY Channel shows at history.com/schedule. ...

Earth is home to 10 quintillion insects. In cultures throughout the world, insects have been honored, feared and even revered as gods. See more in Season 7, Episode 7, "Aliens and Insects." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website ...

These 4 UFO Sightings will blow your mind, in this compilation from The Proof Is Out There. 00:00 Moscow, Russia 03:48 Queensland, Australia 08:02 Iceland 12:31 Central California Watch all your favorite episodes of The Proof Is Out There, and stay up to date on all of your favorite The ...