Searching for life in alien oceans may be more difficult than scientists previously thought, even when we can sample these ...

Time travel has captivated our imagination for decades, but what does physics say about its possibility? Groundbreaking theories from Einstein’s relativity challenge our conventional ...

Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of what the universe looked like in the moments before it rapidly changed ...

The grandfather paradox is just one of the thorny logical problems that arise with the concept of time travel. But one physicist says he has resolved them.

Time travel has long captured the human imagination, from its appearances in science fiction fantasies to its profound implications in modern theoretical physics. Now, a recent study by Dr. Lorenzo ...

Vanderbilt University physicist Lorenzo Gavassino isn't so sure this is as big an obstacle as time-traveler pessimists have ...

It's almost impossible to wrap your head around how mind-blowing it would be to see a real-life time machine in action—talk ...

A physicist believes he may have solved the notorious "grandfather paradox", suggesting that time travel to the past may not be ruled out by this particular branch of physics. First off ...

One of the most famous paradoxes ever, the grandfather paradox, cautions against making changes that could break the timeline if you were to ever travel back in time. But, according to one scientist, ...

While parallel universes are a staple of science fiction, there are some real scientific theories to support them. But if parallel universes do exist, could we ever travel to them? It certainly wouldn ...

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