Planetarium at the Royal Observatory

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 refracting telescope.
If you have ever wondered how stars and planets are born, what astronomers do during the daytime or even about our place in the universe, the interactive Weller Astronomy Galleries will help you unravel the mysteries of the cosmos. A thoroughly entertaining and educational day out!
http://www.rmg.co.uk/visit/planetarium-shows/