Matter tells space how to curve, space tells matter how to move. Total BS. What is the precise mechanism? What language is used? Gravity is the most accurate measured fundamental force in the labs between two lead balls. Why relativity is BS? Relativity is based on two assumptions. 1. All physics laws are the same in the whole universe. 2. Light propagates in vacuum space at 3 x 10^8 m/s. All these fifty years of conscious brooding have brought me no nearer to the answer to the question, 'What are light quanta?' Nowadays every Tom, D i c k and Harry thinks he knows it, but he is mistaken. -Albert Einstein 1953 The fact is light is oscillating atoms carried oscillating electrostatic force at visible frequency. The light must coexist with the matter/medium, there is no light existing or propagating in vacuum space. Einstein thinks gravity is not a force but the curvature of space-time. He thinks that space tells matter how to move and the matter tells space how to curve. The fact is gravity is the most accurate measured fundamental force coexisted with masses. Space-time has no real meaning, no curvature, space can not tell matters how to move, only force can move matters. And matters can not tell space how to curve, space has nothing can be curved. It is all word puzzle, monkey story. There is no black hole, no gravitational wave, no big bang. All BS. Physicists don't understand forces have no speed, forces are coexisting with the matters is stupid. Understood but deny the fact and lie are evil and shameless.