Though claims of extraterrestrial encounters have long been dismissed, many believe the existence of UFOs is not just likely, but a certainty.
Created by Petr Vachler
User score
249 votes
Ended
January 19, 2021
45m
1 · 6 episodes
English
Robert Polo
Self - Narrator (voice)
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American Masters
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Horizon
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Prehistoric Planet
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Cosmos: A Personal Voyage
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