What are UFOs? | Full Documentary | NOVA | PBS

Can science reveal the secrets of mysterious objects seen in our skies? Watch the post-show interview with Ryan Graves, a former U.S. Navy pilot who testified to Congress about UFOs, and Alex Hollings @SandboxxApp, a UFO expert and investigator. Hosted by Matt O’Dowd from @pbsspacetime For decades UFOs have captivated the public, even as many scientists saw them as too taboo to investigate.

Courtesy of NOVA PBS Official on YouTube. Watch on YouTube ↗

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