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NASA's Unexplained Files

Mystery of the Invisible Planet

Season 4 Episode 7
A probe carrying a message to aliens mysteriously malfunctions as it enters deep space. A NASA mission goes disastrously wrong when an imposter breaches Mission Control. Astronomers find evidence of an invisible planet in a distant solar system.
  • 43 min
  • TV-PG
  • Premiered 10/11/2016