In 1958, mankind's centuries-long flirtation with space flight became a torrid love affair. For a decade, tens of millions of people were enraptured -- first, by the U.S.-Soviet race to the moon, and finally, as America outstripped its rival, by Project Apollo alone. It is now more than three decades since the last man walked on the moon ... more time than between the first moonwalk and the beginning of World War II. Apollo did not, as had been promised...