Science fiction teems with spaceships, but in real life they do not exist. No man-carrying craft has even approached spaceyet. Now, after a two-year study, the Office of Naval Research and Douglas Aircraft Co. (builder of the supersonic Skyrocket) have decided that an "inhabited" rocket airplane can be built that will soar to 750,000 ft. (140 miles) and land on the earth safely. It will not be a spaceship in the strictest sense, but the air that it will traverse at the top of its flight will be as thin as a laboratory vacuum.
ONR figures that the space plane can use...
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