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NASA's Unexplained Files S4E7 — Mystery of the Invisible Planet
7.1
NASA's Unexplained Files•Season 4•Episode 7

Mystery of the Invisible Planet

7.1/10 · 27 votesOct 11, 201660 min

Ranked #4 of 8 in Season 4•+0.1 vs season avg

Discussion

A probe carrying a message to aliens malfunctions as it enters deep space. A NASA mission goes disastrously wrong when an imposter breaches Mission Control. Astronomers may have found an invisible planet around a distant star.

Previous episodeE6 · Did Earth Have Two Moons?Next episodeE8 · Mars's Deepest Secret
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Episode Summary

"Mystery of the Invisible Planet" is episode 7 of NASA's Unexplained Files season 4. It scored 7.1/10 from 27 votes, ranking #4 of 8 episodes this season (season average 7.0). It aired on October 11, 2016.

Next: E8 · Mars's Deepest SecretBest of Season 4