People: Sep. 20, 1968

Every astronaut has to do it to see what it is like to be weightless way up there in space. And what's good for the fly-boys has to be valuable for the rocketeers who send them out of this world. So there was Dr. Wernher von Braun, 56, director of NASA's George C. Marshall Space Flight Center, floating around the cabin of a C-135 jet transport while the pilot flew a precise "over-the-hump" curve to produce 30 seconds or so of weightlessness. Von Braun made twelve of the trips and marveled that the sensation was "exhilarating. You cannot imagine what it...

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