Gravity is not tied to size alone Gravity, what we understand of it, is created actively rather than passively, by the rotation of the planet and its polarity. Certain factors, such as size, increase the 3 dimensional 'weight' of an object in space, thus attracting nearby, smaller objects, however, a planet, or other object's specific gravity is determined more so by polarity and rotation. Meaning nessus gravity, due to vex interference, would be unpredictable, how fast is it rotating? How positive or negative are the poles. Are the poles vertical or horizontal to the spin? What materials constitute the core and crust? Science can create a gravitational force around a marble, greater than that on the surface of Sol, that is real life... Not to mention, rotation, just like earth, determined a portion of the EFFECTUAL gravity. If the earth stopped spinning, no centripetal force would be present to counteract gravity. Not only would we suddenly flail across the surface at 25000-ish mph, we would do so under immense gravitational pressure. We would become pancakes. Flying pancakes. Just...know that there is more to gravity than most people understand...and most of the answers you get will be wrong, because even NASA is still working out exactly how objects are affected by gravity... Truth is. No one knows.