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How Time Travel Works in Science Fiction (Infographic)

Chart of various methods of time travel.
Is time travel possible? Are the past and future set or can they be changed? Sci-fi books and films have long explored these ideas.
(Image: © by Karl Tate, Infographics Artist)

Scientists define time as one of the four dimensions of "space-time," a term used to describe the totality of the universe. 

Related: Time Travel Theories

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