F4, the latest cesium fountain clock that now stands as one of the most accurate timekeepers in the entire world.

According to scientists at NIST in Boulder, their newest atomic clock, the NIST-F4, will help track time more precisely and ...

Why ALL Of China Has ONE Time Zone #china #time #history #geography ...

Clocks on Earth are ticking a bit more regularly thanks to NIST-F4, a new atomic clock at the National Institute of Standards ...

The NASA New Horizons spacecraft's extensive observations of Lyman-alpha emissions have resulted in the first-ever map from ...

The new moon occurs April 27, and a day later Venus and Saturn will make a close approach to each other (known as a ...