Space's Deepest Secrets Season 5 Episode 2 Mystery of the Alien Megastructure 2018
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A mysterious star hundreds of light years away might hold the hard evidence of extraterrestrial life, as experts speculate that its bizarre behavior points to proof of a massive alien-made megastructure.
- Released: 2018-10-22
- Runtime: 42 minutes
- Genre: Documentary
- Stars:
- Director:
