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Watch The UnXplained: Mysteries of the Universe Season 1 Episode 3 Online

  • 8/10
  • COUNTRIES: United States of America
  • Subtitles: English

The blue marble we call Earth remains in large part a mystery to the 8 billion people who live on it. How did Earth come to exist, and what are the secrets of its survival? How long will humans be able to call it "home"?