NASA's Unexplained Files S4E6 backdrop
NASA's Unexplained Files poster

NASA's Unexplained Files (2012)

S4E6 Did Earth Have Two Moons?

Oct 04, 2016 Season 4 Episode 6 Documentary, Talk, Mystery

A discovery suggests the hellish clouds of Venus may be the origin of life on Earth. A bizarre sighting 2,000 years ago raises the possibility that Earth once had two moons. A scientist helps the FBI crack the 1996 Olympic bombing.

Previous S4E5
All Episodes
Next S5E1