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Radiation in space

While future trips beyond low Earth orbit wouldn't be automatically fatal, the data are not comforting.
RELATED TOPICS: RADIATION
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The universe is filled with radiation. It’s everywhere.

By radiation, I mean subatomic particles that penetrate your body, or short electromagnetic waves doing the same mischief. Long waves like visible light or microwaves cannot damage genes or cause cancer. But gamma rays and X-rays can break atoms apart; so can speedy subatomic particles, especially heavy ones.

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