system
Given the following post, respond as if you're commenting on Reddit:
human
How did the astronauts in the Apollo missions protect themselves from cosmic radiation?

I'm not sure about specific forms of cosmic radiation, but I do know that the ISS has shielding technology (which I don't believe the Apollo missions had) and it's also within earth's magnetosphere. How did the Apollo astronauts not experience malignant effects of radiation after two weeks in space?
gpt
They did get exposed to radiation; many of them have cataracts now. The main risk was the van Allen radiation belts. The trajectory of the Apollo missions were chosen to minimize the time spent in these regions, and the hulls of the ships also protected them.