Do moon phases affect fishing success? Explore the history of Solunar theory and see how the Citizen Tsuki-yomi A-T watch lets you track moon phases in style.

He worked to develop an atomic clock that is essential to global positioning systems and helped confirm a rare state of ...

Amazon's epic weeklong dealsfest is winding down, but you can still snag a discount Casio, Seiko, or Citizen if you know ...

Earth’s rotation is speeding up. This summer, our planet will spin faster than usual, creating the shortest day since records ...

In the final analysis, by showing that 10 heterogenous clocks across three continents could agree with each other to within a ...

The science behind why the Earth will spin just a little bit faster on July 9, July 22, and August 5, this year.

Knowable Magazine reports on attosecond science, revealing how scientists study atomic interactions at unbelievable speeds to ...

Back in 2023, scientists were already puzzled by the Earth’s accelerating rotation, while some speculated that global warming and melting polar ice caps might be nudging the planet into a faster spin.

A new method uses helium droplets combined with ultrashort laser pulses to trigger chemical reactions in a controlled way.

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.

NIST scientists have published results establishing a new atomic clock, NIST-F4, as one of the world’s most accurate timekeepers, priming the clock to be recognized as a primary frequency ...

Atomic clocks use this technique to measure the transition frequency of atoms so precisely that they become standards for defining the second.