Place your moon by pressing on where you want it to start from in the circle, dragging the opposite direction to where you want it to go, drag further to make more power shoot out, and closer to make it shoot less, your power will be represented on the variable that says 'power' above (only appears once you click and drag). Another variable at the bottom will give the perfect amount of power if you want a perfect orbit (take not that this only works if your moon is facing left or right, and as long as the X axis is 0, and your Y axis is any height, fixing that bug soon). Not recommended to place moon outside the sphere.
I know some people might fling the moon wrong. Find a place to put your moon. Hold, don't click because it will immediately launch it. drag to the opposite direction to where you want it to go (a tail behind the moon is the opposite from where its gonna go), drag farther or closer depending on how hard you want it to be, and watch it circle around the Earth.
