Even if it turns out that time loops never take shape, studying them provides key insights into the deepest rules of reality.

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 feels like the most familiar thing in the world, yet it hides one of physics’ hardest questions: why do we only remember ...