The first ticking ‘nuclear clocks’ are here — what can they do?

Scientists Develop Nuclear Clocks, Promising a New Era of Ultra-Precise Timekeeping

Two new independent studies are heralding a new era of timekeeping with the development of nuclear clocks, which use the nucleus of atoms ra

New Nuclear Clock Research Promises Next Leap in Timekeeping Precision

Two new independent studies are heralding a new era of timekeeping with the development of nuclear clocks, which use the nucleus itself rath

How GPS Works: Trilateration, Atomic Clocks, and Einstein's Relativity

An interactive exploration explaining how GPS works, covering the fundamental principles of trilateration using satellite geometry, the crit

NIST Develops Most Accurate Clock, Setting New Record

Researchers at the National Institute of Standards and Technology (NIST) have developed the most accurate clock in the world, paving the way

The Physics of GPS

NIST Gaithersburg Atomic Clock Failure Causes -10ms Time Step on Internet Time Servers

On December 6, 2025, the primary atomic time source (a cesium beam atomic clock) at NIST's Gaithersburg campus failed, causing a -10 millise