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S2, E1: What was thought to be a secret Soviet satellite could have been a UFO crashing in Pennsylvania; NASA makes an unbelievable discovery, frozen water on Mercury.
Documentary · Mar 2, 2015 · 41 min
Information
- Released
- 2015
- Run Time
- 41 min
- Rated
- 0+
- Region of Origin
- United States
- © 2015 Discovery Communications Inc.
Languages
- Original Audio
- English
- Audio
- Japanese (Japan) (AAC)