Watch Series: Expedition Unknown: Hunt for ExtraTerrestrials Released in (2017) - Season 1 produced by USA, The TV Series categorized in Documentary, and content rating TV-PG with duration 60 min broadcasted as these networks Travel Channel, Streamed at Putlocker Josh Gates sets off on the most extraordinary expedition of his career. He'll journey over 50,000 miles to four continents to tackle mankind's greatest question: Are we alone in the universe? - Season 1