It’s not just in your head — time can actually flip. Physicists in New York have pulled off what sounds like a page ripped from a sci-fi script: They’ve confirmed that “time mirrors,” a trippy ...

J.J. Abrams revived the "Star Trek" films in 2009 with a shift to the Kelvin timeline, built around a twisty use of time ...

Time travel is deterministic and locally free, a paper says—resolving an age-old paradox. This follows research observing that the present is not changed by a time-traveling qubit. It’s still not very ...

This month marks 40 years since Michael J. Fox, as Marty McFly, jumped into a souped-up DeLorean and went back in time, putting his very future existence at risk. (SOUNDBITE OF FILM, "BACK TO THE ...

Time travel—usually the stuff of science fiction movies and quantum theories—isn’t something you'd expect to find in ancient religious texts. But when you dive deep into Hindu mythology, a curious ...