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ISBN 0575046988 / 9780575046986 / 0-575-04698-8
› Find signed collectible books: 'Nightfall'
Isaac Asimov's short story, "Nightfall", tells of a planet orbiting in a system containing 6 suns, where a configuration leading to the fall of darkness occurs only once in two millennia. In collaboration with Silverberg, he has expanded the story into a novel which explores the story's aftermath. [via]