NASA's Unexplained Files S04E06 - Did Earth Have Two Moons?
NASA's Unexplained Files (2012)
S04E06 Did Earth Have Two Moons?
Episode Overview
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.