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After decades in the shadows, UFOs are being studied seriously. Are they weather balloons, optical illusions, secret military technology? Or something else? Follow scientists as they try to unravel the mystery of the strangest objects in our skies.
First Air Date : Mar 03, 1974
Last Air date : Nov 27, 2024
Episode : 994 Episode
Season : 52 Season
Runtime: 55 minutes
Studio: PBS
Country: United States of America
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