Nasa's Unexplained Files
Mystery of the Invisible Planet
Season 4 of 8
Interviews with astronauts and scientists shed light on the many mysterious flying objects that have been caught on Nasa's cameras, and explore the idea of extraterrestrial life
Nasa's Unexplained Files airs on Discovery Science +1 at 6:00 PM, Saturday 19 April. (Subtitles.)
Topics
Education ➝ Science ➝ Factual Topics
Unexplained ➝ Mysteries