Mass UFO sightings from the last 50 years fuel a mystery in this documentary series featuring eyewitness accounts, expert interviews and new evidence.
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Official Trailer
The Manhattan Alien Abduction
Ancient Aliens
Hangar 1: The UFO Files
One Strange Rock
History's Greatest Mysteries
The Blue Planet
Through the Wormhole
Top Secret UFO Projects Declassified
The Americas
How the Universe Works