Dubbing these “closed timelike geodesics” (CTGs), Ralph and Sajeendran explain in the paper: “Such a CTG would be ideal for ...

In 1964, physicist John Bell formulated what became known as Bell's Theorem, showing that if quantum mechanics is correct, ...

Scientists for the first time managed to simulate what objects moving near the speed of light looked like, in an optical ...

Cornell University physicist N. David Mermin once described quantum entanglement as "the closest thing we have to magic," since it means that disturbances in one part of the universe can instantly ...

The world’s best clocks may be sensitive to an odd mix of quantum and relativistic effects that would stretch time and test ...

In 1971, graduate student Stuart Freedman and postdoctoral fellow John Clauser took over a room in the sub-basement of Birge Hall at the University of California, Berkeley, and built an experiment ...

Mustering up the energy to go for a light jog can sometimes feels insurmountable. But for some, running is just a way of life. Take Jenny Hoffman, who just became the fastest woman to ever run across ...

Bobsled, luge and skeleton athletes descend twisting, steep tracks at speeds upward of 80 mph (130 kmh). Julian Finney/Getty Images Speed alone may be the factor that draws many sports fans to the ...