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We live in the age of sputniks. Now that man is planning to go right on out into outer space, we need information about the cluster of problems he will encounter as he ventures forth from his ordinary habitat. For ages man was confined to the surface of land and water. In modern times, deep mines, deep sea diving, and high flying have added to his range and to his danger. The speed of travel compresses time and distance. Man in space suddenly confronts a myriad of new or, at least, strange physiological and medical problems. Answers can hardly be extrapolated from studies done so far on the weightless state of zero gravity for a period of only slightly more than one minute. The experiences of solitude and boredom in model space capsules make us aware that man is still the limiting factor in space travel. The first problem to
Bean WB. Man in Space. Arch Intern Med. 1960;106(2):305. doi:10.1001/archinte.1960.03820020145023
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