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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!

The Best Episodes of NASA's Unexplained Files Season 5

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...
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Episode Rankings

  1. #1 Fan Favorite
    NASA's Unexplained Files Season 5 Episode 1 - JFK UFO Conspiracy
    7.8/10(26 votes)

    #1 - JFK UFO Conspiracy

    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

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  2. NASA's Unexplained Files Season 5 Episode 2 - Curse of the Gas Giant
    7.6/10(22 votes)

    #2 - Curse of the Gas Giant

    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

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  3. NASA's Unexplained Files Season 5 Episode 3 - The Sun's Evil Twin
    7.8/10(16 votes)

    #3 - The Sun's Evil Twin

    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

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  4. NASA's Unexplained Files Season 5 Episode 4 - Secret Aliens
    7.5/10(16 votes)

    #4 - Secret Aliens

    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

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  5. NASA's Unexplained Files Season 5 Episode 5 - Stonehenge on Mars
    7.2/10(22 votes)

    #5 - Stonehenge on Mars

    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

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  6. NASA's Unexplained Files Season 5 Episode 6 - CIA's Secret Revenge
    7.7/10(18 votes)

    #6 - CIA's Secret Revenge

    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

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  7. NASA's Unexplained Files Season 5 Episode 7 - The Moon's Strange Secret
    7.5/10(19 votes)

    #7 - The Moon's Strange Secret

    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

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  8. NASA's Unexplained Files Season 5 Episode 8 - Saturn's Death Star
    7.3/10(18 votes)

    #8 - Saturn's Death Star

    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

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Season 5 Ratings Summary

"JFK UFO Conspiracy" is the best rated episode of "NASA's Unexplained Files" season 5. It scored 7.8/10 based on 26 votes. Directed by Unknown and written by Unknown, it aired on 4/12/2017. This episode is rated 0.2 points higher than the second-best, "Curse of the Gas Giant".