Dubbing these “closed timelike geodesics” (CTGs), Ralph and Sajeendran explain in the paper: “Such a CTG would be ideal for ...

Time travel has long been a subject of fascination in science fiction, but recent scientific endeavors suggest that it might not be as far-fetched as once thought. Researchers in laboratories around ...

From Christopher Nolan's Interstellar to the iconic Back to the Future series, here are the best time travel movies.

There’s little more satisfying than a solid sci-fi series, except perhaps a sci-fi series that brilliantly explores the concept of time travel. Any sci-fi fan can tell you that not all time travel ...