Earth is spinning faster this summer, making the days marginally shorter and attracting the attention of scientists and ...

Earth’s rotation has been accelerating, and this week’s date is among several projected to be fractions of a millisecond shorter than usual.

In a nutshell Scientists connected 10 ultra-precise atomic clocks across six countries in the largest coordinated timekeeping experiment ever conducted While many clocks agreed to extraordinary ...

The time we now use around the world is called Universal time, or UT. It was formalized a century ago — here's how it works.

This New Atomic Clock Is So Precise It Won’t Lose a Second for 140 Million Years The new clock doesn't just keep time — it defines it.

US scientists debut atomic clock that stays true for 100 million years straight NIST-F4 is America’s bid for precision timekeeping dominance, accurate to 2.2 parts in 10 quadrillion and critical ...

According to scientists at NIST in Boulder, their newest atomic clock, the NIST-F4, will help track time more precisely and help put global time on a more accurate frequency.

Altogether, these clocks decide Coordinated Universal Time (UTC), the global system for measuring time. According to a statement from NIST, the new clock is so reliable that if it started to run when ...

Optical clocks promise to be 100 times more accurate than the already exceedingly precise cesium clocks that define our current universal measure of time (UTC).