“The optical clock community is strongly motivated to obtain the best possible set of measurements before the SI second is ...

A NASA satellite that’s been orbiting as space junk since 1967, Relay 2, emitted an unexpected, powerful radio burst that ...

IAEA chief Rafael Grossi said US strikes caused damage to Iran's nuclear sites. Centrifuges were vulnerable. He denied the ...

The NPT-based nonproliferation regime has often worked best by giving countries time and incentives to reconsider fateful ...

The IDF says it targeted "access routes" to the enrichment site which was damaged by US bombing at the weekend.

By comparing optical clocks in six different countries, researchers have taken a major step toward establishing a new global ...

Iran’s nuclear agency confirms attacks on Fordo, Isfahan and Natanz atomic sites, says its work will not be stopped.

In a new study, researchers carried out the most extensive coordinated comparison of optical clocks to date by operating clocks and the links connecting them simultaneously across six countries.

There are hundreds of atomic clocks in orbit right now, perched on satellites all over Earth. We depend on them for GPS location, Internet timing, stock trading and even space navigation.

They concluded that the performance of their OFD system is sufficient to support an atomic reference with stability better than the commercially available cesium clock that has frequency ...

According to scientists at NIST in Boulder, their newest atomic clock, the NIST-F4, will help track time more precisely and help put global time on a more accurate frequency.

Optical atomic clocks, on the other hand, use laser light for even greater precision. However, their complexity has so far limited them to research environments. The 'microcomb chip' acts as a bridge ...