6 Seasons

NASA's Unexplained Files Episodes

S6 E1

Saturn's Moon Monsters

NASA discovers something strange on Saturn's moon that might be aliens.
S6 E2

Aliens vs. Stalin at Area 51

An Area 51 insider claims the Roswell incident was a Soviet conspiracy.
S6 E3

The Black Hole Next Door

Astronomers investigate how much danger a rogue black hole poses to Earth.
S6 E4

Pluto's Evil Twin

Experts investigate if a mysterious object is an alien spacecraft.
S6 E5

Aliens in the Amazon

Experts ask why Neil Armstrong went on a quest to find a legendary library.
S6 E6

Secrets of the Alien Signals

Experts ask if an experiment with dolphins is a prelude to alien contact.