NASA's Unexplained Files Season 5 Episode 4
Secret Aliens
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.
5 - 8Saturn's Death StarFeb. 10, 2018- 5 - 7The Moon's Strange SecretFeb. 03, 2018
- 5 - 6CIA's Secret RevengeJan. 27, 2018
- 5 - 5Stonehenge on MarsJan. 20, 2018
- 5 - 4Secret AliensJan. 13, 2018
- 5 - 3The Sun's Evil TwinJan. 06, 2018
- 5 - 2Curse of the Gas GiantApr. 19, 2017
- 5 - 1JFK UFO ConspiracyApr. 12, 2017
