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.

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 ...

But in an age where science continues to push the boundaries of what's possible, do we even know—in theory—what the physics of time travel might involve? Curious? Click on to discover what we ...

An curved arrow pointing right. Most people usually write off the idea of time travel as fantasy. But in reality, it occurs all the time — in small ways — as the result of time dilation.

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 ...

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, ...

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 ...

But in reality, it occurs all the time — in small ways — as the result of time dilation. Produced by Alex Kuzoian. Special thanks to Jessica Orwig. Follow BI Video: On Facebook For more ...

He noted that time travel is theoretically possible, according to the laws of physics - but only into the future, not the past. According to Einstein's theory of special relativity, time and space ...