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Are We Alone? The Search for Alien Life (Full Episode) | UFOs: Investigating the Unknown | Nat Geo

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About this episode

No longer waiting for the government to reveal everything they know about UFOs, citizen scientists and privately funded organizations are making advances in the search for alien life through data collection. In the air and under the seas, exploration continues to push for answers to the ultimate question: Are we alone?

UFOs: Investigating the Unknown | S2 E6 "Citizen Scientists Tackle the UFO Phenomenon"

Chapters: 00:00 - Citizen Sightings & Independent Science 05:05 - Galileo Project & Citzen Radar Networks 08:32 - Meausring Environmental Signals & Radiation 14:26 - Government Transparency 20:01 - Recovering Interstaller Materials 27:28 - Technosignatures, Physics, & Advanced Propulsion 31:01 - Ultraterrestrial Hypothesis 27:38 - The Cosmic Question

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About National Geographic: National Geographic is the world's premium destination for critically acclaimed storytelling around science and exploration. Discover amazing wildlife, ancient civilizations, hidden worlds, and the incredible wonders of our Earth. Through world-class scientists, photographers, journalists, and filmmakers, Nat Geo inspires fans of all ages to connect with, explore, and care about the world.

Citizen Scientists Tackle the UFO Phenomenon (Full Episode) | Investigating the Unknown | Nat Geo https://youtu.be/UX41GAy_tFc

Posted by
National Geographic, the YouTube channel of National Geographic Channel, on 2026-10-16
Rights holder
National Geographic Channel, whose own site links this channel (checked 2026-10-31)
Length
44 min
Where it plays
Everywhere but United Kingdom, as its rights holder set it on YouTube
Made for kids
No, as YouTube designates it
Language
English, as YouTube records it
Captions
YouTube says it has captions; its player shows them
What it is
A full episode, as its rights holder calls it
Who can watch here
Adult profiles and older: no rating is recorded on YouTube, so adults only. How these videos are chosen

The title, description, picture, length, category, ratings, broadcast times, where it plays and whether it is made for kids come from YouTube. The rights holder named, how it was checked, what it is by its own title or playlist, and which profiles see it are this site's own.