Science fiction is littered with time machines of all different shapes and sizes, with a litany of different rules and regulations that may or may not need to be followed if the protagonists want to ...

We all know there’s no such thing as a time machine, but that’s never stopped Hollywood from building them. These time-defying contraptions fill us with wonder because, while we’re innately curious ...

When did Doc Brown meet Marty McFly? What did the inventor do when he first arrived in 1885? How did he find out about the future of the McFly family? Questions like these have fascinated Back to the ...

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Fans of science fiction movies and TV know that behind aliens, space travel, and robots, time travel is, by far, one of the most beloved and often employed tropes of the genre. In fact, you could ...

Editor’s Note: Paul Davies is author of “How to Build a Time Machine.” He works at Arizona State University. He says a big time warp requires an intense gravitational field, such as a black hole Going ...

Ronald Mallett, one of the world’s leading authorities on the arguments for the possibility of time travel, will celebrate his 45th anniversary as a University of Connecticut physics faculty member ...