Hey folks, breaking news, size doesn't matter. 100% of astrologists agree that a more massive planet doesn't necessarily have a larger gravitational force. Take Uranus for example, it very massive compared to us here on earth. In every way Uranus is larger than Earth, radius, mass, surface area, and volume. However because of earths smaller radius it has a larger gravitational force. The equation for gravitational force is F=G(M1M2/r2). The gravitational field on Uranus is 90% of that on earth. If you weigh 180 lbs on earth, ya gonna weigh 162 lbs on Uranus, pretty cool stuff.