At the heart of this change is a new kind of atomic clock that uses light instead of microwaves. This shift means timekeeping could become 1,000 times more accurate than today's standards.

On July 14, the National Institute of Standards and Technology (NIST) announced their new and improved optical atomic clock is now the most accurate in the world.

A new nuclear clock, which uses the low-energy transition in the nucleus of a thorium-229 atom, could help detect the most elusive particle in the universe.

The United Kingdom's first quantum atomic clock programme could help make missile guidance more accurate and help counter unmanned aerial vehicle (UAV) swarms, ...