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Why do astronauts need to be concerned about EM waves in outer space?

2 Answers

6 votes
So that there will be no danger that soon will happen to the astronauts if ever. Prevention is better than cure
User Foo Ling
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space radiation may place astronauts at significant risk for radiation sickness, and increased lifetime risk for cancer, central nervous system effects, and degenerative diseases. ... Astronauts are exposed to ionizing radiation with effective doses in the range from 50 to 2,000 mSv.
User Adam Easterling
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