Who, but the imaginative young, shall inherit the stars? he sleek transcontinental airliner settled onto one of the maze of runways that was Stevenson Airport. With its turbojets fading into a dense roar, it taxied across the field toward the central building. Inside the plane a red light went off. Senator Vance Duran unhooked the seat belt, reached for his briefcase, and stepped into the crowded aisle. The other passengers were all strangers, which had meant that for nearly an hour he had been