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NASA's Unexplained Files

Revenge of the Fireflies

Season 2 Episode 8
Something in space is attacking the brains of our astronauts. What is it? Should NASA be worried about the sudden appearance of so-called space fireflies? Who could be responsible for the bizarre glowing spiral in the skies over Norway?
  • 44 min
  • TV-PG
  • Premiered 05/27/2015