NASA's Unexplained Files Season 4 Episode 6
Did Earth Have Two Moons?
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.
4 - 8Mars's Deepest SecretOct. 18, 2016- 4 - 7Mystery of the Invisible PlanetOct. 11, 2016
- 4 - 6Did Earth Have Two Moons?Oct. 04, 2016
- 4 - 5Curse of the Full MoonSep. 27, 2016
- 4 - 4The Earth Next DoorSep. 20, 2016
- 4 - 3A President's Close EncounterSep. 13, 2016
- 4 - 2Rise of the Planet KillerSep. 06, 2016
- 4 - 1Pluto's Stranger ThingsAug. 30, 2016
