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Watch Ancient Aliens Season 18 Episode 16 Online

  • 6.9/10
  • COUNTRIES: United States of America
  • Subtitles: English

Ancient Aliens has followed investigators across the globe as they’ve gone directly to the sites where signs of alien life have been found. Now, Giorgio Tsoukalos takes a look back at the most incredible evidence ever uncovered that could offer definitive proof that we are not alone in the universe.