as the mass of a celestial object decreases , the surface gravity of that celestial object weakens
celestial_object is astronomical_object. celestial_object is not celestial_object. celestial_sphere is not surface. celestial_object is not heavenly_body. meteoroid is not celestial_object. celestial_sphere is surface. celestial_object is heavenly_body. celestial_mechanics is not astronomy. celestial_object is celestial_object. celestial_object is not astronomical_object.