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Date: 2013-04-30 20:26:13Physics Radiation Roentgen equivalent man Ionizing radiation Background radiation Van Allen radiation belt Project Orion Naturally occurring radioactive material Radioactivity Nuclear physics Radiobiology | A Perspective on Radiation Dosages 3 Space travel is understandably a risky business. One of the most well-studied, and worrisome,Add to Reading ListSource URL: www.nasa.govDownload Document from Source WebsiteFile Size: 242,41 KBShare Document on Facebook |
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