Off a launching pad at Cape Canaveral one afternoon last week thundered an Army Jupiter-C rocket. Seven minutes later, the rocket popped a satellite into orbit. What was even more remarkable than this space-age achievement was the fact that the world accepted the news of a third U.S. orbiting moon with a great deal less flutter than that accorded the winners of Hollywood's Academy Awards (see CINEMA).
The newest satellite, Explorer III, was similar to Explorer I, fired Jan. 31, and identical to Explorer II, which miscarried and disappeared after its successful launching March 5. Explorer III, weighing 31...