Sergei Ponomarenko: The UFO Time Traveler who Disappeared Without a Trace On April 23rd 2006, a man in his early 20s was seen in Kyiv, Ukraine staring at a high-rise apartment building. Witnesses described him as looking confused and anxious. They thought he might have been a lost tourist. ...

Scientists cannot say with absolute certainty where the moon came from. See more in this scene from Season 1, Episode 6, "Mysteries of the Outer Realms." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. ...

Throughout human history, the planet Mars has captured our imagination. Ancient Egyptian astronomers were the first to record the red planet on a chart of the cosmos known as the Senenmut star map, in Season 7, Episode 5, "Aliens and the Red Planet." Watch all new episodes of Ancient Aliens, ...

These top 5 UFO sightings are so out of the ordinary that it's difficult to make sense of them, check them out in this The Proof Is Out There compilation. #TheProofIsOutThere Subscribe for more from The Proof Is Out There and other great shows from The UnXplained Zone: ...

These mysteries from China will blow your mind! See more in this compilation from The Proof Is Out There. 00:00 Fire Breathing Dragon 05:05 Alien Egg 08:23 Lightning Strikes Twice 12:24 Gravity Defying Van 17:20 Is that a Water Serpent? 21:51 Car vs Child Watch all your favorite episodes of ...

In 2017, scientists in Hawaii detected a strange object traveling through our solar system. See more in this scene from Season 6, Episode 1, "Aliens and Outer Space." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at ...

The Dogon tribe knew about a star that is invisible to the human eye years before it was discovered, how could this be possible? See more in this scene from Season 1, Episode 6, "Mysteries of the Outer Realms." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The ...

Off the coast of San Diego, U.S. warships are performing training exercises when they are swarmed by Unidentified Aerial Vehicles, in this #Short from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at ...

Sealed vaults possessing a strange and deadly curse, mysterious relics believed to be under otherworldly protection, and riches so priceless, it has cost men their lives. See more in Season 7, Episode 4, "Treasures of the Gods." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and ...

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Check out these mind-boggling space mysteries, in this The Proof Is Out There compilation. Chapter 1 - Moon Base Cover-up? - 00:00 Chapter 2 - Ancient Civilization on Mars - 03:59 Chapter 3 - ISS Object seen in Space! - 08:28 Chapter 4 - SpaceCraft in Antarctica?! - 12:42 Chapter 5 - UFO seen ...

Ancient Astronaut Theorists raise new theories surrounding how solid the moon really is. See more in this clip from "Aliens and Outer Space." 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 ...