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 ...

Researchers believe they’ve discovered artificial structures on Mars, home to extraterrestrial civilizations, in this clip from Season 3, "Mysteries of Mars" Watch all new episodes of The UnXplained, Fridays at 8/7c, and stay up to date on all of your favorite The HISTORY Channel shows at ...

Scientists at Cornell University come across evidence of multiple advanced extraterrestrial civilizations after analyzing a map of the Milky Way, in this clip from Season 3, "Apocalypse When?" Watch all new episodes of The UnXplained, Fridays at 8/7c, and stay up to date on all of your ...