That standard model itself is built upon Einstein's theory of gravity. Einstein's all theories are BS. Gravity is coexisting with all matters/masses. Gravity has no thing to do with empty space. space cannot tell matter how to move, only force can move matter/mass. Matter cannot tell space how to curve, space has no matter that can be curved/touched. Simple facts, why scientists fall for such BS theory? Why you accept such BS theory? Shame on your teachers.