NASA's Unexplained Files backdrop
Documentary•Talk•Mystery

The Best Episodes of NASA's Unexplained Files Season 5

Every episode of NASA's Unexplained Files Season 5 ranked from best to worst. Discover the Best Episodes of NASA's Unexplained Files Season 5!

Binge this in 8h 0m•Peaking at 7.8/10

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 5 Episode 3 - The Sun's Evil Twin
    7.8/10(17 votes)

    S5:E3

    Two suns are photographed in the Indonesia sky -- a trick of the light or a sighting of our Sun's evil twin? Scientists are baffled by ghostly swirls on the Moon's surface. An astronaut disappears during his return to Earth.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  2. NASA's Unexplained Files Season 5 Episode 6 - CIA's Secret Revenge
    7.7/10(19 votes)

    S5:E6

    When the Soviet Union unveils its own space shuttle, the CIA hatches a secret revenge plot. Recent discoveries shed new light on the destruction of Sodom and Gomorrah. A missing nuclear weapon could threaten a NASA base in the Arctic.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  3. NASA's Unexplained Files Season 5 Episode 1 - JFK UFO Conspiracy
    7.5/10(28 votes)

    S5:E1

    A declassified letter written by President Kennedy demands the CIA share its UFO data with NASA. A bizarre pattern on the surface of Mars could be a coded alien message. Investigators are shocked to find a rocket crash-landed in a crater on the Moon.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  4. NASA's Unexplained Files Season 5 Episode 4 - Secret Aliens
    7.5/10(17 votes)

    S5:E4

    An astronomer records an unusual signal from a distant star. FBI agents find classified documents at the home of a NASA scientist. When scientists discover strange DNA in the octopus, they examine if their origins could be alien.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  5. NASA's Unexplained Files Season 5 Episode 7 - The Moon's Strange Secret
    7.5/10(20 votes)

    S5:E7

    The last humans to walk on the Moon discover something strange on the surface. A NASA scientist investigates a strange phenomenon responsible for horrific mass deaths. A landmark NASA mission threatens to destroy the reputation of an American hero.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  6. NASA's Unexplained Files Season 5 Episode 2 - Curse of the Gas Giant
    7.3/10(24 votes)

    S5:E2

    Jupiter is far hotter than it should be, and scientists don't understand why. The Curiosity Rover finds something strange on Mars. Could it be a lost spacecraft or something far more sinister? Detectives turn to NASA for help with a murder cold case.

    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 5 Episode 8 - Saturn's Death Star
    7.3/10(19 votes)

    S5:E8

    A mysterious object is orbiting Saturn, and it looks just like the Death Star. New evidence might shed new light on the mysterious death of Yuri Gagarin, the first man in space. When a cuting-edge satellite vanishes, fears of a space war escalate.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  8. NASA's Unexplained Files Season 5 Episode 5 - Stonehenge on Mars
    7.2/10(23 votes)

    S5:E5

    When NASA spots a something on Mars that resembles Stonehenge, they investigate what could have made this strange structure. Scientists discover a mysterious hole in Saturn's rings. An ancient tribe claims contact with alien visitors.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

Season 5 Ratings Summary

"The Sun's Evil Twin" is the best rated episode of "NASA's Unexplained Files" season 5. It scored 7.8/10 based on 17 votes. Directed by Unknown and written by Unknown, it aired on 1/6/2018. This episode is rated 0.1 points higher than the second-best, "CIA's Secret Revenge".