The speed of light is often regarded as the ultimate cosmic speed limit, but researchers have now managed to slow it down dramatically—to just 61 kilometers per hour. This was achieved by using a Bose ...

A tiny optical device built into a silicon chip has achieved the slowest light propagation on a chip to date, reducing the speed of light by a factor of 1,200 in a study reported in Nature Photonics ...

Scientists pushed photons across the universe to test the speed of light—and found Einstein’s cosmic speed limit still holds ...

The speed of light is the ultimate limit of motion, yet against the vast scale of the cosmos it becomes painfully inadequate.

Edgerton’s flash work to trillion-frame capture with single-pixel sensors, helping you choose gear for fast events ...