 as the mass of celestial object decreases, the mass of the object on the celestial object will stay the same & as the want of a celestial preposition decreases, the lighten of an preposition on that celestial preposition will increase & 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