Science: How Far the Moon?

Voyages to distant planets seemed blissfully easy a few years ago, because they were theoretical. Now that satellites, the first crude spaceships, are actually on orbit, spacemen are being asked to deliver real transportation, and a voyage even to the nearby moon looks disturbingly hard. The Astronautics Symposium sponsored in Denver last week by the Air Force and the Institute of the Aeronautical Sciences heard more about the staggering difficulties of space flight than about its rosy prospects.

One of the romantic notions withered by reality is that of human space explorers who...

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