radiation
Once astronauts venture beyond Earth's protective atmosphere, they may be exposed to the high energy charged particles of galactic cosmic rays and solar particle events (SPE) and secondary protons and neutrons. Because of their ionization patterns in biomolecules, cells and tissues are distinct from terrestrial radiation, the resulting biological effects are poorly understood, and the amount of risk involved is subject to large uncertainties.
the space radiation environment and contribute to the development of risk models, a greater knowledge of the genetic consequences of heavy ions to biological systems, and better methods of spacecraft shielding.
NASA’s Human Research Program aims to mitigate the harmful effects of the space radiation environment on astronaut health outside of the relative protection of the Earth's magnetosphere.
Ionizing radiation travels through living tissues, depositing energy that causes structural damage to DNA and alters many cellular processes.
From this risks
Risk of Radiation Carcinogenesis from Space Radiation - increased risk of cancers.
Risk of Acute or Late Central Nervous System Effects from Space Radiation - changes in motor function and behavior or neurological disorders. Risk of Degenerative Tissue or Other Health Effects from Space Radiation - other degenerative tissue defects such as cataracts, circulatory diseases, and digestive diseases.
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