Last month, a consortium of 69 scientists from across Europe and Japan completed the largest and most coordinated comparison ...

The history of clocks is a remarkable tale of human ingenuity and the pursuit of precision. Explore how ancient civilizations began measuring time and how this led to the creation of the first true ...

In the final analysis, by showing that 10 heterogenous clocks across three continents could agree with each other to within a ...

So far, the shortest day ever recorded was July 5, 2024, when Earth rotated 1.66 milliseconds faster than usual. This year, ...

The science behind why the Earth will spin just a little bit faster on July 9, July 22, and August 5, this year.

An attosecond—or 0.000000000000000001 second—is no time at all for a person. That is not so for electrons, atoms and molecules, and laser-wielding scientists are revealing the action ...