That's why atomic physicists at NASA want to build a more precise, more autonomous atomic clock. Sponsor Message The team hopes a prototype will be ready by late 2025.

This clock changed world history, according to the radio hosts, as it allowed the British to voyage long distances and set up their empire with more accuracy than they had previously experienced.

The Bulletin of the Atomic Scientists set the clock to 89 seconds before midnight - the theoretical point of annihilation. That is one second closer than it was set last year.

NIST set its new atomic clock in motion, and it’s astoundingly precise. The clock is so reliable that it would be off by less than a second if it had started running 100 million years ago ...

A clock network would allow geodesists to compare the ticking of clocks all over the world. They could then use the variations in time to map Earth’s gravitational field much more precisely, and ...

A Cold War icon, the clock conveys scientists’ views on humankind’s risk of destroying itself. Its current setting: just 100 seconds to midnight. The Doomsday Clock, reset each January ...

NIST-F4 is a cesium fountain clock, which is considered the cream of the crop — there are fewer than 20 of its kind operating in the entire world. Fountain clocks are not constantly running like ...

The Doomsday Clock is a metaphor that represents how close humanity is to self-destruction, due to nuclear weapons and climate change.. The clock hands are set by the Bulletin of the Atomic Scientists ...