NASA's Unexplained Files backdrop
Documentary•Talk•Mystery

The Best Episodes of NASA's Unexplained Files Season 6

Every episode of NASA's Unexplained Files Season 6 ranked from best to worst. Discover the Best Episodes of NASA's Unexplained Files Season 6!

Binge this in 8h 0m•Peaking at 7.7/10

Dive into the mysteries of some of NASA’s most curious missions and explore stories of engineering achievement and human endurance. Each episode offers first hand testimony from astronauts, NASA mission footage, plus beautifully rendered CGI

Airs on
Science
BestEpisodes
WorstEpisodes
BestSeasons
AllEpisodes

Seasons6

All123456

Episode Rankings

  1. #1 Fan Favorite
    NASA's Unexplained Files Season 6 Episode 2 - Aliens vs. Stalin at Area 51
    7.7/10(25 votes)

    S6:E2

    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.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  2. NASA's Unexplained Files Season 6 Episode 8 - Did Aliens Nuke Mars?
    7.4/10(21 votes)

    S6:E8

    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.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  3. NASA's Unexplained Files Season 6 Episode 3 - The Black Hole Next Door
    7.2/10(27 votes)

    S6:E3

    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.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  4. NASA's Unexplained Files Season 6 Episode 4 - Pluto's Evil Twin
    7.0/10(23 votes)

    S6:E4

    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.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  5. NASA's Unexplained Files Season 6 Episode 5 - Aliens in the Amazon
    6.9/10(24 votes)

    S6:E5

    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.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  6. NASA's Unexplained Files Season 6 Episode 6 - Secrets of the Alien Signals
    6.9/10(27 votes)

    S6:E6

    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.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

    7. Trending NowTRENDING NOW

    The 20 BEST Episodes of NASA's Unexplained Files

    READ
  7. NASA's Unexplained Files Season 6 Episode 1 - Saturn's Moon Monsters
    6.8/10(25 votes)

    S6:E1

    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.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  8. NASA's Unexplained Files Season 6 Episode 7 - Planet of the Metal Aliens
    6.7/10(26 votes)

    S6:E7

    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.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

Season 6 Ratings Summary

"Aliens vs. Stalin at Area 51" is the best rated episode of "NASA's Unexplained Files" season 6. It scored 7.7/10 based on 25 votes. Directed by Unknown and written by Unknown, it aired on 4/18/2019. This episode is rated 0.3 points higher than the second-best, "Did Aliens Nuke Mars?".