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Mars-bound astronauts face chronic dementia risk from galactic cosmic ray exposure

(University of California - Irvine) Will astronauts traveling to Mars remember much of it? That's the question concerning University of California, Irvine scientists probing a phenomenon called 'space brain.' Charles Limoli and colleagues found that exposure to highly energetic charged particles -- much like those found in the galactic cosmic rays that will bombard astronauts during extended spaceflights -- causes significant long-term brain damage in test rodents, resulting in cognitive impairments and dementia.
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