What are UFOs? | Full Documentary | NOVA | PBS

NOVA PBS Official • Premiered 18 hours ago • 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 Official website: https://to.pbs.org/3C7GZaW#novapbs For decades UFOs have captivated the public, even as many scientists saw them as too taboo to investigate. Now, after highly publicized sightings of unidentified objects by Navy pilots, UFOs are moving out of the shadows and into the light, as NASA pledges to study them scientifically. So what does science have to say? Though some are identified as balloons or drones, weather phenomena, or optical illusions, others remain mysterious. Could they be the result of secret new technology developed by other governments – or our own? And what would it take for alien engineers to traverse vast distances to send probes or visit Earth from other solar systems? Explore the evidence, as astrophysicists and engineers use new technologies to investigate the strangest objects in our skies. Chapters 00:00 Introduction 04:02 Early UFO Sightings and Explanations 12:46 Most Famous UAP Sightings 34:47 Government Cover-Ups Cause Conspiracy 39:01 Collection Scientific Data to Investigate Theories 49:52 Conclusion © 2025 WGBH Educational Foundation All rights reserved This program was produced by GBH, which is solely responsible for its content.

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