The King George III Collection

 

It is not known who originally made this orrery, but it has been referred to as Wright's grand orrery because of the extensive modifications which Thomas Wright made to it in 1733 for King George II. An orrery is a mechanism which demonstrates the movements of the planets within the Solar System. Grand orrery, before 1733 © Science Museum/Science & Society Picture Library

 

The inside of the grand orrery © Science Museum/Science & Society Picture Library

Click on these links for:
A 340 kB .mpg file showing the grand orrery being used
Software to play the .mpg file