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Documentary•Talk•Mystery

The Best Seasons of NASA's Unexplained Files

Every season of NASA's Unexplained Files ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of NASA's Unexplained Files!

Binge this in Unknown•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

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#1

Season 5

8 Episodes

First Aired: Apr 2017

7.5/ 10

Average Rating

Best episodeE3 · The Sun's Evil Twin 7.8

#2

Season 3

8 Episodes

First Aired: Feb 2016

7.1/ 10

Average Rating

Best episodeE6 · Curse of the Red Planet 7.6

#3

Season 6

8 Episodes

First Aired: Apr 2019

7.1/ 10

Average Rating

Best episodeE2 · Aliens vs. Stalin at Area 51 7.7

Other Seasons

#4

Season 4

8 Episodes

First Aired: Aug 2016

7.0/ 10

Average Rating

Best episodeE8 · Mars's Deepest Secret 7.3

#5

Season 2

8 Episodes

First Aired: Mar 2015

6.9/ 10

Average Rating

Best episodeE6 · Nazis on the Moon 7.1

#6

Season 1

7 Episodes

First Aired: Mar 2012

6.4/ 10

Average Rating

Best episodeE4 · Black Knight Rises 6.8