Know what an orrery is?

[Alchymist]

Well do you? :hDe:

http://www.youtube.com/watch?v=tmNu..._source=facebook.com&utm_campaign=buffer#t=21

 

[terrywerm]

Isn't that one of those mechanical things that shows the planets and their orbits? As you turn it, each planet spins on its axis as well as orbiting the sun at the correct ratio?

ON EDIT: Okay I went and watched the video. Yup - that's what it is! Great project though!