Here are 3 ball which move towards the mouse pointer in different ways. None of them simulate gravity. We want Earth to be attracted to the mouse pointer as if the mouse pointer had a gravitational pull. (Not any of the balls that are currently hovering around the mouse pointer, but the mouse pointer itself. That is the easiest thing to find the location of.) You'll be searching online to find how gravity works, and how it can be recreated in Scratch. First of all, if you're not sure what orbits look like you'll want to watch a video about them. The orbit of a comet is a good example of how different gravity is from any of the non-Earth balls... comets speed up the closer they get to the sun.
