Check out these unbelievable UFO sightings in this compilation from The UnXplained. Watch your favorite episodes of The UnXplained, and stay up to date on all of your favorite The HISTORY Channel shows at history.com/schedule. Check out more full episodes of The UnXplained on YouTube here- ...

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. ...

A large bird-like creature is rumored to have been spotted in the 1800s in Tombstone, Arizona. See more in this scene from Season 4, Episode 20, "The Weird Wild West." Watch all your favorite episodes of The UnXplained, and stay up to date on all of your favorite The HISTORY Channel shows at ...

Check out these top moments from 2022, in this The UnXplained compilation. Watch all new episodes of The UnXplained, streaming now, on The HISTORY Channel website at http://history.com/schedule. #TheUnXplained Subscribe for more from The UnXplained and other great The HISTORY Channel ...

Researchers were baffled when witnesses discovered an extraordinary discovery of 60-foot-long bones. See more in this clip from Season 4, "Real Life Monsters." #TheUnXplained Watch all new episodes of The UnXplained, streaming now, on The HISTORY Channel website at ...

Researchers in Geneva, Switzerland make an incredible discovery of exoplanets that may be home to extraterrestrial life. See more in this clip from Season 3, "The Search For Extraterrestrial Life." #TheUnXplained Watch all new episodes of The UnXplained, streaming now, on The HISTORY Channel ...

While examining the remains of a shipwreck, archeologists come across an astonishing ancient computer, in this clip from Season 3, "Wonders of the Ancient World." New episodes on Fridays at 9/8c Watch all new episodes of The UnXplained, streaming now, on The HISTORY Channel website at ...

Researchers believe they've discovered artificial structures on Mars, home to extraterrestrial civilizations, in this clip from Season 3, "Mysteries of Mars." #TheUnXplained Subscribe for more from The UnXplained and other great shows from The UnXplained Zone: ...

Researchers examine lost scrolls discovered in the ancient Roman city of Pompeii, in this clip from Season 3, "Mysterious Tombs." #TheUnXplained Subscribe for more from The UnXplained and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Watch more The UnXplained on ...

Video evidence shows an unidentified object that resembles a "tic tac" off the coast of San Diego, in this clip from Season 3, "What Lies Below?" Watch all new episodes of The UnXplained, Fridays at 9/8c, and stay up to date on all of your favorite The HISTORY Channel shows at ...

Researchers believe they’ve discovered artificial structures on Mars, home to extraterrestrial civilizations, in this clip from Season 3, "Mysteries of Mars." #TheUnXplained Subscribe for more from The UnXplained and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT ...

Scientists at Cornell University come across evidence of multiple advanced extraterrestrial civilizations, in this clip from Season 3, "Apocalypse When?" Watch all new episodes of The UnXplained, Fridays at 9/8c, and stay up to date on all of your favorite The HISTORY Channel shows at ...