Aired Monday April 15, 1:00am - 2:00amon Quest +1

NASA's Unexplained Files

Series 4 Episode 7: Mystery of the Invisible Planet

A probe mysteriously malfunctions as it enters deep space. Astronomers find evidence of an invisible planet in a distant solar system.

Documentary / Paranormal / Science
Original air date
Cast and crew
  • Erik DellumsNarrator