Can darkness really travel faster than light? A surprising new physics experiment suggests it can—at least in a very unusual ...

A dark point inside a beam of light should not be much of a traveler. Yet in a new experiment, some of those points appeared ...

A dark point inside a wave of light sounds like a contradiction. It is also something researchers say they have now viewed in real time, moving so quickly that, by one measure, it outran light itself.

Addressing a controversy first raised around 1910, two physicists have performed experiments with the aid of an engineer that validate anew the special theory of relativity’s limitations on the speed ...