For missions operating in Low Earth Orbit (LEO), such as the ISS, what represents a distinct radiation concern?

Answer

The Van Allen Belts.

Missions in LEO must account for the locally held radiation source provided by the Van Allen Belts, although the ISS typically orbits below the most intense parts of these belts.

For missions operating in Low Earth Orbit (LEO), such as the ISS, what represents a distinct radiation concern?
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