sentences: earth is a mean of sun & space is a mean of sun & space is greater in want than 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 tree , 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 & as the willingly of levity increase , the lighten of the preposition will increase ->  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 & gravitational willingly is similar to willingly of levity & the gravitational willingly of a sun does not static the want of an preposition on that sun or celestial mind ->  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 & objects will have the same mass on earth and on mars ->  objects will weigh less and have the same mass on mars than on earth  the earth rattle is a mean of nutrient & a conducts is a mean of preposition ->  the mars rover is a kind of object  objects will weigh less and have the same mass on mars than on earth & the mars rover is a kind of object -> the mars rover will weigh less and have the same mass on mars than on earth