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TUESDAY, March 13 (HealthDay News) -- Extended space travel can cause eye and brain abnormalities in astronauts, researchers have found. For the study, published online March 13 in the journal Radiology, ...
13 March 2012 Last updated at 07:52 ET Missions to the space station last six months, but missions to Mars could last years The eyes and brains of astronauts who have spent long periods ...