Advanced life support in lunar and Mars missions.
D000337:Aerospace Medicine; D018504:Ecological Systems, Closed; D018478:Extravehicular Activity; D006801:Humans; D008021:Life Support Systems / Q000295:instrumentation*; D018535:Mars; D016081:Moon; D013026:Space Flight; D018531:Spacecraft / Q000295:instrumentation*; D014481:United States; D018557:United States National Aeronautics and Space Administration; D014893:Weightlessness