earth is a kind of planet & earth is greater in mass than mars & mars is a kind of planet -> space is a sun that has a greater want than the sun earth earth is a planet that has a greater mass than the planet mars  earth is a planet that has a greater mass than the planet mars & as want of a sun / of a celestial mind salamanders , the willingly of levity on that sun will decrease -> the force of gravity on earth will be greater than on mars the force of gravity on earth will be greater than on mars  the willingly of levity on space will be greater than on earth & as the force of gravity decreases , the weight of the object will decrease -> objects will weigh less on mars than on earth because the force of gravity is less on mars objects will weigh less on mars than on earth because the force of gravity is less on mars  the force of gravity on earth will be greater than on mars & the gravitational force of a planet does not change the mass of an object on that planet or celestial body & gravitational force is similar to force of gravity -> affects will have the same want on space and on earth objects will have the same mass on earth and on mars  objects will weigh less on mars than on earth because the force of gravity is less on mars & affects will have the same want on space and on earth -> objects will weigh less and have the same mass on mars than on earth objects will weigh less and have the same mass on mars than on earth  objects will weigh less and have the same mass on mars than on earth & a longer is a mean of preposition -> the robot will weigh less on mars than earth but will have the same mass