The next generation of atomic clocks "ticks" with the frequency of a laser. This is about 100,000 times faster than the microwave frequencies of the cesium clocks which are generating the second at ...

In a new study, researchers carried out the most extensive coordinated comparison of optical clocks to date by operating clocks and the links connecting them simultaneously across six countries.

Is it too early on a Tuesday to have an existential crisis? The Doomsday Clock doesn’t believe so. On Tuesday morning, the Doomsday Clock was set at 89 seconds to midnight, which is the closest it has ...

Researchers in China have created one of the most precise clocks ever made – so precise, in fact, that it could soon lead scientists to officially redefine the second. Known as a strontium optical ...

The 2023 Doomsday Clock on display before a Bulletin of the Atomic Scientists event on January 24, 2023. The Bulletin has been setting the clock since 1947 based on analysis of threats facing humans ...

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