A comet streaks closely past the Earth and has its pathway slightly changed or bent due to the attractions to the Earth why is it that the same comet cannot do the same to the Sun but instead it pulled into the sun

If water were a non polar molecule, how would its properties be different ? a.) water would be a much lighter molecule b.) water would be able to climb up inside plants c.)water would not be able to form hydrogen bonds d.) water would stick together much more strongly