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Unsealed: Alien Files - Alien Origins

Seizoen: 2 - Aflevering: 23 / 45 - Eerst uitgezonden: Onbekend - Episode ID: 979959

What are UFOs? Are they spacecraft? Or vessels of a different kind, from a place beyond imagination? Do they travel vast distances to reach planet Earth? And do they come in peace-- or to conquer? From mysterious planets at the edge of the Solar System, to epic journeys beyond the boundaries of time and space — Join us as the secret origins of alien visitors are UNSEALED.