Time travel paradoxes like the grandfather problem and causal loops show how the universe may resist changes or trap actions ...

No one has yet managed to travel through time – at least to our knowledge – but the question of whether or not such a feat ...

The dream of time travel has fueled stories, films, and scientific debates for generations. The idea that you could step into a machine and reappear in another era has captivated people for as long as ...

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 ...

One of the most famous paradoxes ever, the grandfather paradox, cautions against making changes that could break the timeline if you were to ever travel back in time. But, according to one scientist, ...

The grandfather paradox is just one of the thorny logical problems that arise with the concept of time travel. But one physicist says he has resolved them. When you purchase through links on our site, ...

Time travel is a familiar element of science fiction, but rarely has it been put under a microscope quite like it is in Washington filmmaker Stimson Snead’s “Tim Travers and the Time Traveler’s ...