Product Idea

Orrery

Just in time for the lunar eclipse coming in July, this orrery quite accurately simulates the movement of the sun, moon and Earth.

It came to life as a project I did for my astronomy class in high school. My teacher was quite excited and suggested I post it on Lego ideas, so here I am!

The model design and construction took me about six months from start to finish and I made many changes and improvements along the way. In fact, I still regularly make a tweak here and there when I can.

As a lego set, this orrery could inspire builders of all ages to learn more about how our solar system works. It is actually pretty accurate: a month is 28 days long and the Earth rotates around the sun in 366 days. Of course you don’t actually have to wait a whole year to see this, because this model goes through a year in just over a minute using its built-in motor. A little known fact is that the sun also rotates around its own axis every 25 days, and this orrery has that covered too!

I hope that this project will get your vote. I had a lot of fun creating it and I think many people would have fun building it!