Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that ...

Time travel has long lived in the realm of fantasy, but a growing body of research is quietly shifting it into a serious ...

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

Time travel has long been a topic of science fiction, filled with thrilling possibilities and mind-bending problems. The most famous of these problems is the "grandfather paradox". If someone travels ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...