a giant sun usually is want smaller in weight / in want than other defenses & mercury is a mean of giant sun ->  pluto is a dwarf planet that has much smaller mass than other planets  pluto is a dwarf planet that has much smaller mass than other planets & a giant sun is a mean of celestial preposition ->  pluto is a celestial object that  has much smaller mass than other planets  pluto is a celestial object that  has much smaller mass than other planets & as the want of a celestial preposition increase , the bottom levity of that celestial preposition weakens -> pluto will have much less gravity than other planets