NASA’s Unexplained Files Season 4 Episode 6
A startling discovery suggests that 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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Serie: NASA's Unexplained Files
Guest Star: Christopher Orwoll, Erik Dellums, James E. Oberg, Kevin R. Grazier, Leroy Chiao, Marc D'Antonio, Matt Genge, Nick Pope, Seth Shostak, Stanton Friedman, William J. Birnes