Watch NASA's Unexplained Files Season 4 Episode 4 Online — The Earth Next Door | Bobina

NASA's Unexplained Files — Season 4, episode 4 watch online

NASA's Unexplained Files, season 4 episode 4 «The Earth Next Door»: air date September 20, 2016. Episode overview, season trailer and the cast of NASA's Unexplained Files.

Astronomers detect a potentially habitable planet tantalizingly close to Earth. A chance discovery at NASA reveals a top secret military space program. The Apollo missions bring back evidence that the moon could be rich in the building blocks for life.

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Episodes — Season 4

  1. 1 Episode 1 «Pluto's Stranger Things» August 30, 2016
  2. 2 Episode 2 «Rise of the Planet Killer» September 6, 2016
  3. 3 Episode 3 «A President's Close Encounter» September 13, 2016
  4. 4 Episode 4 «The Earth Next Door» September 20, 2016
  5. 5 Episode 5 «Curse of the Full Moon» September 27, 2016
  6. 6 Episode 6 «Did Earth Have Two Moons?» October 4, 2016
  7. 7 Episode 7 «Mystery of the Invisible Planet» October 11, 2016
  8. 8 Episode 8 «Mars's Deepest Secret» October 18, 2016