In order to keep time accurately, we have always had to set our clocks by the ticks of a better one. Until the 1950s, the best were those set by astronomers based on the position of the sun in the sky ...

In the Royal Greenwich Observatory Archives at Cambridge University Library, one man's papers take up a staggering 110 meters ...

Near the small town of Herstmonceux in the English county of East Sussex sits the former home of the Royal Greenwich Observatory. The Royal Observatory Greenwich was first built in Greenwich ...

The Royal Greenwich Observatory said this year, the Lyrids will be visible from April 16 to April 25, peaking on April 22. Once a year, the Earth passes through the trail left by the comet C ...

In the Royal Greenwich Observatory Archives at Cambridge University Library, one man’s papers take up a staggering 110 meters of shelving. In a new article from Isis: the Journal of the History ...