GIANT SPACE STATIONS IN THE SKY, underground cities on the moon, galactic empires that have forgotten the earth, interstellar war with telepathic ants, voyages to go boldly where no man has gone before. Such were the predictions about the glories of the space age. No wonder the failure of events to live up to the predetermined history bequeathed by science fiction has disappointed the baby boomers.
But that future may still be realizable, believe many scientists in and out of NASA who meet now and then to try to imagine the technology that could bring the space age to life. In...