For the first time, researchers measured singularities in combined light and sound waves moving faster than the speed of ...

Scientists experimentally confirmed what we’ve known to be true for half a century—darkness can “travel” faster than light.

Bobby Moore explains how fast the speed of light really travels.

If there is an absolute law in the universe, it’s that nothing can travel faster than the speed of light. For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still daring to test it. Some theories of quantum gravity suggest light might ...