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===Introduction===

===Introduction===

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. The EGR is described generally 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 and its [[gravitation]]. In EGR the universe has been always approximately the same, never changing, beyond trivial movements of celestial bodies. The EGR is described generally by the [[Perfect cosmological principle]].  

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  

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. For this reason there are also a few flaws which had to be dealt with. Those new elements and recognition of flaws showed up after 1985 when it turned out that the universe is not expanding (as it was obviosly 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>,

:<math>E=mc^2</math>,

where <math>E</math> is energy contained in any mass <math>m</math> and <math>c</math> is speed of light in vacuum, 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 EGR 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>.

where <math>E</math> is energy contained in any mass <math>m</math> and <math>c</math> is speed of light in vacuum, comes out with [[Einstein's radius of universe]]!  

 

Which means that Einstein must have been doing something right assuming the [[perfect cosmological principle]] already in 1917. And so the EGR 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 EGR 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 that has neither the beginning nor the end.  

The EGR 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 that has neither the beginning nor the end.