The European Space Agency’s ACES mission could ultimately pave the way for a global network of atomic clocks that make these ...

This month, NIST scientists officially submitted it to the International Bureau of Weights and Measures (BIPM) for certification as a “primary frequency standard,” a title reserved for the most elite ...

The National Institute of Standards and Technology's new cesium fountain clock is one of the most precise atomic clocks ever created.

The new clock is so reliable that it would be off by less than a second if it had started running 100 million years ago, ...

A new atomic clock at the National Institute of Standards and Technology in Boulder is helping researchers count seconds to ...

NIST scientists built the agency's first fountain ... They compared the fountain's ticks to those of hydrogen masers—the workhorse atomic clocks that tick off the seconds for official U.S ...

The clock hands are set by the Bulletin of the Atomic Scientists, a group formed by Manhattan Project scientists at the University of Chicago who helped build the atomic bomb but protested using it ...

An alternative periodic table of elements focusing on highly charged ions reveals new science that could support the quest ...

DENVER (KDVR) — It is said that time is relative and passes differently depending on an observer’s relative motion and gravitational potential. Although some would argue time is a construct ...

From sundials to atomic clocks, our understanding of time has become a lot more accurate as technological developments allowed us to measure it more precisely. Much more than helping us arrive on time ...