the gravitational force of a celestial object does not change the mass of an object on that planet or celestial body & as the mass of a celestial object decreases , the surface gravity of that celestial object weakens ->  as the mass of celestial object decreases, the mass of the object on the celestial object will stay the same  as the mass of a celestial object decreases , the surface gravity of that celestial object weakens & as the force of gravity decreases , the weight of the object will decrease ->  as the mass of a celestial object decreases, the weight of an object on that celestial object will decrease  the earth has more mass than the moon & a moon is a kind of celestial object & earth is a kind of celestial object ->  earth as a celestial object has more mass than the moon as a celestial object  earth as a celestial object has more mass than the moon as a celestial object & less is the opposite of more ->  the moon as a celestial object has less mass than earth as a celestial object  as the mass of celestial object decreases, the mass of the object on the celestial object will stay the same & as the mass of a celestial object decreases, the weight of an object on that celestial object will decrease & the moon as a celestial object has less mass than earth as a celestial object ->  an object will weigh less but have the same mass on the moon than on earth  an object will weigh less but have the same mass on the moon than on earth & a rocket is a kind of object -> the rocket will weigh less but have the same mass on the moon than on earth