Both objects have the same mass. Mass is a measure of the amount of matter in an object and is constant regardless of the location of the object. The weight of an object, on the other hand, depends on the gravitational force acting on it, which varies with the location. The gravitational force on the moon is weaker than the gravitational force on Earth because the moon has less mass and a smaller radius. Therefore, the object on the moon weighs less than the object on Earth, but they have the same mass.