THE MEDICAL CHALLENGE OF MANNED SPACE FLIGHT.
D000054:Acceleration; D018504:Ecological Systems, Closed; D004463:Ecology; D005118:Extraterrestrial Environment; D006801:Humans; D013026:Space Flight; D014893:Weightlessness
ACCELERATION; EXTRATERRESTRIAL ENVIRONMENT; SEALED CABIN ECOLOGY; SPACE FLIGHT; WEIGHTLESSNESS