If you use your smartphone’s GPS to find Earth’s prime meridian – the north-south line marking zero degrees longitude – at Greenwich Observatory, you’ll notice something a bit odd. You won’t be ...

That's a lot of standard candles. June 22 marks the 350th anniversary of the Royal Observatory Greenwich, the home of the historic Prime Meridian that is considered by many to be the birthplace of ...

The latest from noted science writer Raymo (An Intimate Look at the Night Sky) isn't merely a history of the prime meridian, the zero-longitude line passing through eastern England that is the ...

Introduction: one line to rule the world -- Geographical confusion -- Absurd vanity : the world's prime meridians before c.1790 -- Declarations of independence: prime meridians in America, c.1784-1884 ...

The Royal Observatory Greenwich commemorated its 350th anniversary, having been established in 1675 by King Charles II. Its initial mandate focused on resolving the longitude problem, a significant ...

The earth’s astronomical navel* was about to shift its position. Britain’s Royal Observatory was preparing for its first permanent move in 271 years. Left behind in Greenwich (now part of London) ...