Staying sane in space.
Simpson
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D000337:Aerospace Medicine / Q000639:trends; D018480:Astronauts / Q000523:psychology*; D003220:Conflict, Psychological; D003466:Cultural Characteristics; D018504:Ecological Systems, Closed; D006686:Hobbies; D006801:Humans; D007802:Language; D013026:Space Flight; D014481:United States; D018557:United States National Aeronautics and Space Administration