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In this Aug. 31, 2013 photo made available by NASA, astronaut Chris Cassidy, Expedition 36 flight engineer, exercises on the advanced Resistive Exercise Device (aRED) in the Tranquility node of the International Space Station. In an extensive audit released Thursday, Oct. 29, 2015, NASA's inspector general office looked at the space agency's overall effort to keep astronauts healthy during lengthy space missions _ especially trips to Mars, currently targeted for the 2030s. (NASA via AP)
Associated Press | October 29, 2015 9:26 am
Report: NASA needs better handle on health hazards for Mars