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.

Genre:

Documentary, Talk, Mystery

Seasons:

6

Episodes:

47

Cast:

Quality:

HD

Duration:

60 min

First Air:

2012

Rating:

7.1