That's one-tenth the speed of light, according to a study published in Physical Review Letters. The discovery could reveal brand new laws of physics, one expert said. Scientists have calculated a ...

How do we know the speed of light – and why does it have a speed limit at all? Leah Crane explores the history of one of the ...

Observational clues The transit of Venus allows a geometrical measurement of the Earth–Sun distance, and a measurement of the speed of light. (Courtesy: iStock/milehightraveler) Light is so ...

Physicists have transferred time and frequency information over a distance of more than 100 km in free space, far exceeding the previous record. The technique, which makes it possible to synchronize ...

Monday’s Google Doodle features Tom Longboat, a Canadian long-distance runner who is regarded as one of the greatest marathoners ever. And although his promoters and the press often called Longboat ...

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 ...

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 ...

Whether your goal is to run a marathon or improve your fitness, following a solid training plan is one way to stay consistent as you work toward that goal. But finding the right training plan for you ...