Time travel is one of the staples of science fiction, right up there with aliens, space opera, and robots. Most science fiction authors have written at least on

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This book contains a broad overview of time travel in science fiction, along with a detailed examination of the philosophical implications of time travel. The e

The Collected Works of Clifford D. Simak is a compilation of the renowned science fiction author's most celebrated writings, showcasing his unique blend of futu

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