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===Introduction===

===Introduction===

The Einsteinian gravitation is a contemporary theory of universe that has been always approximately the same, never changing, described by the [[Perfect cosmological principle]].  

The Einsteinian gravitation, or rather the Einsteinian General Relativity (EGR), as it should be more properly called, is a contemporary theory of universe. In EGR the universe has been always approximately the same, never changing, beyond trivial movements of celestial bodies. EGR is described generally by the [[Perfect cosmological principle]].  

It is called ''"Einsteinian"'' since its still Einsteinian type theory, except a bit deeper since it includes elements that Einstein didn't know about sice they turned out after 1985 when it turned out that for sure the universe is not expanding (as it was neither expanding when Newton tried to describe it. Without yet knowinf about the [[curvatures of spacetime]]. Yet almost purely Newtonian solution comes out with [[Einstein's radius of universe]]!

The theory is called ''"Einsteinian"'' since it's Einsteinian type theory, except a bit deeper since it includes elements that Einstein didn't know about. Those elements turned out after 1985 when it turned out that the universe is not expanding (as it was neither expanding when Newton tried to describe it. Without yet knowing though about the [[curvatures of spacetime]]. Yet almost purely Newtonian solution (with accuracy to <math>E=mc^2</math>) comes out with [[Einstein's radius of universe]]! Which means that Einstein must have been doing something right assuming the stationary universe in 1917. And so the "Einsteinian theory" may be also "right" as far as we know<ref>Theories are never really "right" unless they pass all the possible tests of their validity which the Big Bang hypohtesis was not able to pass and that's why it had to be replaced with EGR).</ref>.

   

   

The theory is explaning how the relativity of time and space (notions of non existence of absolute time and absolute space) are working in stationary, neither expanding nor contracting, eternal universe of ours that has neither beginning nor end.  

The theory is explaning how the relativity of time and space (notions of non existence of absolute time and absolute space) are working in stationary, neither expanding nor contracting, eternal universe of ours that has neither beginning nor end.  

:<math>H_o=Z/r=v/c/r</math>

:<math>H_o=Z/r=v/c/r</math>

where <math>Z</math> is redshift of certain galaxy, <math>r</math> is distance from the observer to the galaxy <math>v</math> is apparent recession speed of a galaxy, and <math>c</math> is speed of light in vacuum, is really  

where <math>Z</math> is redshift of certain galaxy, <math>r</math> is distance from the observer to the galaxy, <math>v</math> is '''apparent''' recession speed of a galaxy, and <math>c</math> is speed of light in vacuum, is really  

:<math>H_o=c/R_E</math>,  

:<math>H_o=c/R_E</math>,