Read our blog to get the lowdown from our experts and go behind the scenes at Royal Museums Greenwich.
In August 2015 a paper was published by scientists in the US explaining why the Prime Meridian at the Royal Observatory Greenwich is 102 metres to the west of the prime meridian used by satellite based navigation and timekeeping, known as the International Reference Meridian or IRM. The paper created quite a stir in the media.
Today marks the 340th anniversary of the founding of our Observatory - Britain's first state-funded scientific research institution. Our Curator Louise tells us more.