Physicists are quietly rewriting one of the most basic units in science, using a new generation of optical clocks that can keep time so precisely they barely lose a beat over the age of the universe.

A clock built by a team led by researchers at the National Institute of Standards and Technology (NIST) has been estimated to be 41 percent more accurate than the previous timekeeping record holder.

The oldest fossilized remains of complex animals appear suddenly in the fossil record, and as if from nowhere, in rocks that ...

LANCASTER COUNTY, Pa. (WHTM) — A Guinness World Record-winning clock is now on display at the National Watch and Clock Museum in Lancaster County. According to the museum, the Burgess Clock B received ...

Share on Facebook (opens in a new window) Share on X (opens in a new window) Share on Reddit (opens in a new window) Share on Hacker News (opens in a new window) Share on Flipboard (opens in a new ...

Researchers at the U.S. National Institute of Standards & Technology (NIST) say they have created the most accurate atomic clock to date — one that can measure time down to the 19th decimal place.