===So why the universe looks like expanding?===
The answer implied by its physics answer is known for about a century. From the times when Einsteins discovered their theories of relativity. Special (STR) and general (GTR). Astrophysicists though , while accepting SRT 100% didn't pay attention to GTR and the fact that the time and space are coupled and so the curved space implies non trivial behaviour of time. Therefore the universe looks like expanding since the time is coupled to the [[curvature of space]] and as a result the proper time in deep space runs slower than in our Galaxy. Since the news, with the supporting calculations, have been rejected without peer reviews by scientific journals, they stayed unknown.
Since the news, with the supporting calculations, have been rejected without peer reviews by scientific journals, they stayed unknown. Astrophysicists never even calculated how much of ''[[intrinsic redshift]]'' there is in the universe before jumping to conclusion that the universe is expanding. Had they calculated, or asked somebody who knows high school calculus, they would have avoided the embarrassment<ref>I've seen an appeal of an astronomer to Carl Sagan to end this scandal with Big Bang since, as put by the author of the appeal, ''"it makes all astronomers look like idiots"'', but the lobby of [[relativists]] turned out to be stronger, or Carl Sagan didn't know that the Big Bang is a fake.</ref> and a lame hypothesis that the universe is expanding.
===There is more to gravitation than refuting the Big Bang===