NASA's Unexplained Files - Season 4 - Eps 8: Mars's Deepest Secret
British astronomers working for the CIA intercept Soviet photos of the moon. A malfunction on the ISS could poison its crew with ammonia gas. A startling image taken by a NASA probe points to evidence that life could exist on Mars.
About NASA's Unexplained Files

Title: NASA's Unexplained Files
First Air Date: 2012-03-27
Last Air Date: 2019-05-23
Status: Returning Series
Rating: 7/10 (from 30 votes)
Language: EN
Seasons: 6
Total Episodes: 47
Network: Science
Genres: Documentary, Talk, Mystery
Production Companies: Discovery, Wag TV
Synopsis
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 to bring to life these voyages that reveal unexplained sightings that have dogged many of NASA’s most famous missions.