Ultra precise Chinese lattice clock joins international system, challenging decades of US dominance in global timekeeping ...

Keeping perfect time is far trickier than it sounds. The world’s best clocks that ...

Once considered an oddity of quantum physics, time crystals could be a good building block for accurate clocks and sensors, ...

By replacing single atoms with an entangled pair of ions, physicists in Germany have demonstrated unprecedented stability in ...

Ask someone on Earth for the time and they can give you an exact answer, thanks to our planet's intricate timekeeping system, built with atomic clocks, GPS satellites and high-speed telecommunications ...

Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the difference, showing that Mars clocks tick slightly faster—and fluctuate over the ...