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

If traveling into the past is possible, one way to do it might be sending people through tunnels in space. by raggio5 via Pixabay Have you ever dreamed of traveling through time, like characters do in ...

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

Adi Foord does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...