Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of ...

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

If you're in the mood for a great time-travel story, there's no shortage of titles to choose from. Here are some of the best ...

It's time to stop sleeping on this 2015 SyFy hidden gem. Here's why '12 Monkeys' was great 10 years ago and great now.

Patients who travel longer distances to emergency facilities are more likely to present with more severe medical conditions, highlighting travel time as a key indicator of healthcare access, according ...

One of the most famous paradoxes ever, the grandfather paradox, cautions against making changes that could break the timeline ...