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One entry on the list:
Gateway: In Gateway and subsequent novels from sci-fi author Frederik Pohl, an asteroid in our solar system is found to hold nearly a thousand spaceships left by enigmatic aliens humanity dubs the Heechee. The asteroid, named Gateway, becomes a port from which adventurers can venture on interstellar journeys resulting in riches or death.Read about another entry on the list.
--Marshal Zeringue