Time will no longer be imposed upon us by a cesium fountain clock at the National Institute of Standards and Technology,” ...

The symbolic Doomsday Clock has been maintained by the Bulletin of the Atomic Scientists since 1947.

The US Air Force is turning to atomic clock technology to help coordinate swarms of small drones in environments where traditional satellite navigation is jammed or spoofed, according to a new request ...

At this point, atomic clocks are old news. They’ve been quietly keeping our world on schedule for decades now, and have been through several iterations with each generation gaining more accuracy. They ...

Smaller version Illustration of a conventional atomic fountain clock (left) next to NPL’s miniature atomic fountain clock.

For many years, cesium atomic clocks have been reliably keeping time around the world. But the future belongs to even more ...