The BEST episodes of NASA's Unexplained Files season 6
Every episode of NASA's Unexplained Files season 6, ranked from best to worst by thousands of votes from fans of the show. The best episodes of NASA's Unexplained Files season 6!
Strange flying objects have been caught on NASA's cameras and astronauts have reported seeing UFOs. Some of the odd shapes and lights can be identified; others remain a mystery. We'll reveal NASA footage and interview the astronauts and scientists.
#1 - Aliens vs. Stalin at Area 51
Season 6 - Episode 2 - Aired 4/18/2019
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.
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#2 - Pluto's Evil Twin
Season 6 - Episode 4 - Aired 5/2/2019
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.
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#3 - Aliens in the Amazon
Season 6 - Episode 5 - Aired 5/9/2019
After Neil Armstrong's moonwalk, he led an expedition into 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.
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#4 - Saturn's Moon Monsters
Season 6 - Episode 1 - Aired 4/11/2019
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.
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#5 - Did Aliens Nuke Mars?
Season 6 - Episode 8 - Aired 5/30/2019
A strange discovery by NASA's Mars Curiosity rover suggests the Red Planet was home to an alien nuclear war 300 million years ago, and experts investigate if an extraterrestrial Armageddon transformed an earth-like world into the wasteland we know today.
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