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  • 2017-10-04T04:00:00Z on Discovery
  • 58m
  • 3h 52m (4 episodes)
  • United States
  • English
  • Documentary
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?

4 episodes

Series Premiere

2017-10-04T04:00:00Z

1x01 Close Encounters

Series Premiere

1x01 Close Encounters

  • 2017-10-04T04:00:00Z58m

Josh begins his search for extraterrestrial life with a once-in-a-lifetime visit to NASA and an alien-hunting expedition in Chile, where scientists and ufologists are making new discoveries.

2017-10-11T04:00:00Z

1x02 Ancient Visitors

1x02 Ancient Visitors

  • 2017-10-11T04:00:00Z58m

Josh's journey continues on remote Easter Island, where ancient alien theorists believe extraterrestrials visited a millennia ago. Then, he goes to the site of a recent meteorite strike in Zimbabwe that could prove life on Earth began in outer space.

2017-10-18T04:00:00Z

1x03 UFOs Over England

1x03 UFOs Over England

  • 2017-10-18T04:00:00Z58m

The hunt for alien life continues in Zimbabwe, where Josh interviews witnesses from one of the largest UFO sightings in modern history. Then, in England, he investigates an infamous case known as "Europe's Roswell."

Season Finale

2017-10-25T04:00:00Z

1x04 Roswell Revealed

Season Finale

1x04 Roswell Revealed

  • 2017-10-25T04:00:00Z58m

Josh's epic search for extraterrestrial life comes to a close in the USA, where a legendary investigation team brings him to a hot case in Arkansas. Then, he visits with a researcher who may have new information on the mother of all UFOs.

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