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search engines. OCR for page 62 Managing Space Radiation Risk in
the New Era of Space Exploration 4 Shielding Approaches and
Capabilities BASIC SHIELDING CONCEPTS In principle, there are
three ways to reduce a dose from external radiation: Increasing
the distance from the source, Minimizing the time of exposure,
and Using shielding. Increasing the distance from the source is
often the simplest to implement for terrestrial radiation
protection (e.g.