This year marks 350 years since The Royal Observatory in Greenwich was founded. Take a look at four astronomically great ...

Later in 1831, the Greenwich Time Bell was installed on the roof of the house, after the observatory tested chronometers used by the Royal Navy ... has survived two World Wars and remains ...

The Royal Observatory Greenwich is the home of Greenwich Mean Time and the Prime Meridian of the World. It is also home to London's only planetarium, the Harrison timekeepers and the UK's largest ...

Jonathan Betts is Curator of Horology, which is the study of time and time-keeping, at the Royal Observatory in Greenwich ... longitude is how far around the world you've come from home and ...