During a physics test today (introductory phys) we had to find the force exerted on an object from gravity. So my mind somehow wandered off as I started wondering where gravity actually comes from. I know that's a very broad question since I guess we don't even really know where we "come from", so maybe it should be rephrased as what causes gravity... Either way, the answer seems beyond me. I'm having trouble grasping what exactly causes this force I suppose. Can anybody help me out? This is the first physics class I've taken, so if you think the answer would be beyond my understanding then I don't mind if you just say so. =D Thanks! Oh and this isn't a hw question or anything. I'm just curious.