Atomic clocks have long been the gold standard for ... By the early 2000s, the picture had begun to change. Re-analysis of old data confirmed that the nuclear excitation energy was indeed in ...

The way time is measured is on the edge of a historic upgrade. At the heart of this change is a new kind of atomic clock that ...

ACES will gather ultra-precise data across at least ten observation windows, each lasting about 25 days during the ...

Clocks on Earth are ticking a bit more regularly thanks to NIST-F4, a new atomic clock at the National Institute of Standards ...

Two cutting-edge atomic clocks — the most accurate ever created — have launched on a SpaceX rocket and are on their way to the International Space Station. In the coming months, they will use ...

Atomic clocks record time using microwaves at a frequency matched to electron transitions in certain atoms. They are the basis upon which a second is defined. But there is a new kid on the block ...