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

The early universe experienced a phase of rapid expansion, known as inflation. For decades, cosmologists assumed that this ...

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

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

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

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

CERN Science Gateway is open from Tuesday to Sunday from 9 a.m. to 5 p.m., though a cafe on-site opens a half an hour before ...

In a revelation sparking curiosity, researchers in Canada claim to have demonstrated "negative time" in action. A quantum experiment ... ways of understanding the universe's most perplexing ...

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, ...