Your last 15 questions have all been addressed solely to Jehovah's Witness, with the clear intent of attacking them for believing in the law of gravity. You are now coming across as being mentally imbalanced because billions of people who believe in God as Creator believe in the law of gravity. Why are you singling out the JWs?
Further, what on earth are you going on about with this Michelson-Morley, Michelson-Gale, Sagnac, and Airey's Failure experiments with regard to the universe? You don't even give a link! Why should anybody explore this question further?
Well, let me just answer it by saying JWs likely say the same thing to all that as do billions of other humans, which is, "What?"