Does a larger planet = a stronger gravitational force on that planet? I'm thinking of the moon being smaller than the earth, and also having a weaker gravitational force on its surface, but doesn't gravitational force grow weaker the farther away you get from something? There's that equation used to find gravitational force, and I'm not sure of the whole thing, but I know it has a bunch of stuff over r squared, which means that as the radius increases, the gravitational force decreases... Maybe it has nothing to do with this, I really don't know. (that's why I'm asking) And by the way, this isn't hw or anything, I'm just curious.