Orphans of the Sky Author:Heinlein, Robert A. From the dust jacket: "... the story of a civilization evolving in a huge spaceship lost between the stars, whose inhabitants have long since forgotten, except as a myth, the existence of the rest of the universe. A giant cylinder, five miles long, two thousand feet thick, is spinning slowly on its axis and drifting timelessly through the inters... more »tellar deep. Within its smooth and portless skin the concentric decks are piled: miles of passageway, acres of living room, workshops, hydroponic farms, assembly halls, storerooms and offices. The air is warm and moist and fresh, the corridors are lighted, the farms are green. People live here - Earth humans to whom Earth is a forgotten place, no more than superstition or a tenet of religious faith. Muting and assassination, generationsa go, destroyed the men who knew how the navigate and run the engines. Their whole world in the Ship, the inside of the Ship, a little universe complete in itself. And then one man from the center of the Ship, Hugh Hoyland, learns the truth..."« less