Have you ever fantasized about going back in time to relive a moment — or change it? Maybe you’re more interested in ...

Recent scientific breakthroughs are making concepts once confined to science fiction, like time travel, seem tantalizingly ...

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 ...

For years, the idea that we might be living inside a vast computer program has drifted from philosophy seminars into ...

Science decided to be unfun this morning. Physicists at Hong Kong University of Science and Technology demonstrated that a single photon cannot be accelerated beyond the speed of light. This implies ...

Predestination doesn’t waste time trying to explain the time travel technology, and it doesn’t need to, because it’s so coherent and straightforward, you naturally see that it makes sense right away.

In a peer-reviewed paper, a scientist says he has mathematically proven the physical feasibility of a specific kind of time travel. The paper appears in Classical and Quantum Gravity. Germain Tobar ...

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 ...

During our second Ars Live event earlier this month, screenwriter/producer Ed Solomon (Bill & Ted franchise) joined physicists Sean Carroll (Johns Hopkins University) and Jim Kakalios (University of ...

The first rule of time travel is that you can only travel within your own lifetime. The second rule of time travel is that you can only stay for 90 seconds. And “The Third Rule of Time Travel,” ...