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NASA's Unexplained Files

Season 6 · 8 episodes · Apr 11, 2019

  1. NASA's Unexplained Files season 6 episode 1 still

    Episode 1

    Saturn's Moon Monsters

    Apr 11, 2019

    When NASA discovers something strange on Saturn's biggest moon, experts investigate if aliens feeding on the electric atmosphere could be the culprit. The disturbing evidence points to a grisly apocalypse if these monsters ever make it to Earth.

  2. NASA's Unexplained Files season 6 episode 2 still

    Episode 2

    Aliens vs. Stalin at Area 51

    Apr 18, 2019

    When a former Area 51 insider alleges that the Roswell UFO incident was a nefarious Soviet conspiracy masterminded by Stalin, experts investigate if it was indeed an enemy plot against America -- or if the confession is just another cover-up.

  3. NASA's Unexplained Files season 6 episode 3 still

    Episode 3

    The Black Hole Next Door

    Apr 25, 2019

    When astronomers discover a rogue black hole speeding through the Milky Way, they investigate how much danger this cosmic monster poses to Earth, and what would happen if it ever entered our solar system.

  4. NASA's Unexplained Files season 6 episode 4 still

    Episode 4

    Pluto's Evil Twin

    May 2, 2019

    After NASA's New Horizons spacecraft flies by Pluto, it encounters a strange alien world that shuts down the probe's computers, and experts investigate if this mysterious object is an alien spacecraft hiding at the edge of our solar system.

  5. NASA's Unexplained Files season 6 episode 5 still

    Episode 5

    Aliens in the Amazon

    May 9, 2019

    After Neil Armstrong's moonwalk, he led an expedition to the Amazon to find a legendary library that holds all knowledge of an advanced alien civilization. Experts ask if a close encounter on the moon's surface inspired Armstrong's mysterious quest.

  6. NASA's Unexplained Files season 6 episode 6 still

    Episode 6

    Secrets of the Alien Signals

    May 16, 2019

    When NASA begins a strange experiment to communicate with dolphins, experts investigate if it's a prelude to making alien contact. But some fear that such a discovery could have apocalyptic consequences.

  7. NASA's Unexplained Files season 6 episode 7 still

    Episode 7

    Planet of the Metal Aliens

    May 16, 2019

    Experts investigate if a nearby exoplanet could be the home to a alien civilization of strange, metallic monsters, after a new discovery confirms that life can thrive on such a strange world.

  8. NASA's Unexplained Files season 6 episode 8 still

    Episode 8

    Did Aliens Nuke Mars?

    May 23, 2019

    A strange discovery by NASA's Mars Curiosity rover suggests the Red Planet was home to an alien nuclear war 300 million years ago. Experts investigate if an extraterrestrial Armageddon transformed an earth-like world into the wasteland we know today.