
Unveiling the truth behind UFOs, scientists are intensifying their investigat...
Unveiling the truth behind UFOs, scientists are intensifying their investigation to determine whether these mysterious sightings can be attributed to weather balloons, optical illusions, or clandestine military technology, or if there's a more extraordinary force at work.
Seasons: 52
Current Status: Returning Series
Network: PBS
Production Country: United States
Genres:Documentary