    Sentence. I: According © to» Einstein's  theory of relativity, gravity is not pulling  us. down but-space.is pushing us down.  Dees that mean there is.no gravity?    Sentence 2: Relativity. - (physics):  According to. Einstein, High i bends,  wwse space is warped. : ig! iS  litle ‘or no mass:and cannot bend from  ravity, how: can: pace be warped ‘if it  s Ho mass. at all?