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1) What is radiation? 2) Give two ideas of how to block radiation in space.
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1) What is radiation?
2) Give two ideas of how to block radiation in space.

User Crazyjul
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1) the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.

2) Several feet of concrete or a few inches of dense material (such as lead) are able to block radiation.
User Xiatica
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