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NASA's Unexplained Files: Season 4

4x06 Did Earth Have Two Moons?
TV-G

  • 2016-10-05T02:00:00Z on Science
  • 1h
  • United States
  • English
  • Documentary, Talk Show
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.
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