Earth and Satelites Orbiting at Different Velocity

I'm studying cosmonautics, so to me stem is equal to space in the first place. This is why my entry to competition is based on cosmos. But cosmos is huge, there are so many great things like nebulas and stars and all those things are so far away from a random Earth citizen. There is however an aspect of cosmos which is close to our life: artificial satelites. A lot of crutial parts of our lifes are possible only because of satelites. Media, satelite navigation and many, many more. Most people know that satelites orbit arround our globe but not so many know that velocity of satelites further away from Earth is smaller. And here comes my idea. Small Earth model with 4 satelites orbiting on 2 circular orbits at different linear and angular velocity. Earth is also able to spin independently from satelites. In the model only 3 gears are being used, it is very simple and build from system bricks mostly. It contains 249 pieces. Hope you enjoy it!