Lego Orrerys are nothing new, but few can claim the accuracy of the one built by Jason Allemann of JK Brickworks. The model is actually 97 percent accurate in terms of rotation. Obviously it isn’t to scale or anything.
Since Allemann was restricted by the components available in Lego’s Technic line, the moon in the model orbits the Earth every 28 days while his Earth orbits the sun every 375 days.
See it in action below.
Complete instructions on the build are available at JK Brickworks.