While parallel universes are a staple of science fiction, there are some real scientific theories to support them. But if ...

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

One Vanderbilt University researcher thinks time travel might not just be for the movies. (Credit: Wikimedia Commons). Time ...

Left and right circularly polarized light, where the electromagnetic waves spiral in a clockwise and counterclockwise manner ...

The idea of time-travel paradoxes has been explored in science and the popular imagination alike, but some researchers think ...

What would Thomas Aquinas think of artificial intelligence (AI), and what does a large language model think of Thomas Aquinas ...

The grandfather paradox is just one of the thorny logical problems that arise with the concept of time travel. But one ...

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, ...

The grandfather paradox is just one of the thorny logical problems that arise with the concept of time travel ... physics. Specifically, I applied the standard framework of quantum mechanics ...