This year marks 350 years since The Royal Observatory in Greenwich was founded. Take a look at five astronomically great facts about the world-famous institution that are out of this world. The ...

There are 24 time zones. There is an imaginary line running through the UK called the Prime Meridian. It runs through a place in London called Greenwich. The Prime Meridian splits the world into ...

Geographical coordinates are essential for identifying any point on Earth. This is possible, as is well known, thanks to a "network" of meridians and parallels. Among these, the Prime Meridian that ...