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

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

Besides quantum mechanics, another interesting topic in physics is relativity. Let’s take a look at it! Of all the force fields, the gravitational field is the one man has known for the longest time.

Living in a rotating universe would be strange indeed. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. We know that planets rotate, but what ...

Scientists, or at least their wild-haired fictional counterparts, promised us time travel and still have not delivered. Forget walking with dinosaurs or killing baby Hitler; I’d be happy just to warn ...

Our curiosity about time travel is thousands of years old. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Time travel makes regular appearances ...

If general relativity, Einstein's theory of gravity and space-time, allows for the ability to go back in time and kill your grandfather, asks David Z. Albert, a physicist and philosopher at Columbia ...

One of the most mind-bending aspects of Albert Einstein's Theory of Relativity is time dilation. Time moves more slowly for a person in motion compared to a person at rest. This effect also applies in ...

Time travel has been a fantasy for at least 125 years. H.G. Wells penned his groundbreaking novel, The Time Machine, in 1895, and it’s something that physicists and philosophers have been writing ...