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Martian atmosphere's effect on radiation?

The atmosphere of Mars protects it's surface from micrometeorites. How significantly does the Martian atmosphere reduce radiation in comparison with, for example, the Moon's surface or open space?
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How are spacecraft shielded from solar radiation? [duplicate]

I realize that the Earth has an atmosphere that protects us from solar radiation, but what if we go beyond the atmosphere? I researched that the atmosphere is 300 miles thick and the moon is 238,400 ...
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2answers
712 views

What level of protection is required for spacewalkers?

If you're going on a space walk, you need to be shielded from cosmic rays, temperature, and possibly other issues. What components of cosmic rays are dangerous? What sort of protection is used to ...