Stream Full Episodes of NASA's Unexplained Files: https://www.discoveryplus.com/show/nasas-unexplained-files From Season 4, Episode 3: A President's Close Encounter Future President Jimmy Carter spots a U.F.O. in 1969 while he is Governor of Georgia. Subscribe to Science Channel: ...

A strange discovery by the Mars Curiosity rover suggests the Red Planet was home to an alien nuclear war, and experts investigate if an extraterrestrial Armageddon transformed an earth-like world into the wasteland we know today. Stream Full Episodes of NASA's Unexplained Files: ...

FBI agents in Blackhawk helicopters swoop on the Sunspot Solar Observatory in New Mexico and close the facility down for ten days. They claim this drastic action was taken because of an employee misusing the internet, but others suspect there is a more frightening reason for the mysterious ...

Experts investigate if a nearby exoplanet could be the home to an alien civilization of strange, metallic monsters after a new discovery confirms that life can thrive on such a world. Stream Full Episodes of NASA's Unexplained Files: https://www.discoveryplus.com/show/nasas-unexplained-files ...

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The discovery of extraterrestrial life might face an impossible challenge: the physics of the universe itself. Stream Full Episodes of How the Universe Works: https://www.sciencechannel.com/tv-shows/how-the-universe-works/ Subscribe to Science Channel: http://bit.ly/SubscribeScience Like us on ...