I One hundred and nine years after leaving Earth, the spaceship, Hope of Man , went into orbit around Alta III. The following "morning" Captain Browne informed the shipload of fourth and fifth generation colonists that a manned lifeboat would be dropped to the planet's surface. "Every member of the crew must consider himself expendable," he said earnestly. "This is the day that our great grandparents, our forefathers, who boldly set out for the new space frontier so long ago, looked forward to w