“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 ...

As we mentioned earlier, US media are reporting that an initial assessment produced by the Defense Intelligence Agency says ...

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.

European officials urged Iran to restrict its nuclear program hoping for off-ramp from conflict before President Trump ...

The White House said President Donald Trump will make a decision “within two weeks” on whether to get involved in the Israeli ...

Hailed as a world first, the new atomic clock does not have to rely on a global navigation satellite system to determine time while at sea ...

Why did Israel strike now? There was a combination of factors that led up to this moment. One of the more immediate reasons was that an International Atomic Energy Agency report found that Iran was ...

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.