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Title: Another winner by Niven.
Review: Who else could imagine mounting a huge engine on Uranus so that Earth couldbe moved away from an expanding sun. A man is resurrected in another bodyand given a mission to seed other worlds. Taking his Bussard Ramjet, hesets off on his own to the center of the Galaxy and a trip around thecentral black hole that becomes a trip into the far future. Returning to asolar system dominated by a red sun, he finds the world changed in ways hecan't believe. And then the real story begins. Big imagination from thewriter I call Mr. Big.
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