New Steady-state Cosmology and Criticism to Universal Big Bang

In the framework of general relativity systematically solve the problem of galaxy formation and some significant cosmological difficulties. Einstein’s equation of gravitational field is first modified space-time is proved to be infinite expansion and contraction of universe are proved to be in circles the singular point of big bang didn’t exist Besides it is disclosed that galaxies form from unceasing growth but not the assemblage of existent matter after big bang new matter continuously creates in the interior of celestial bodies and celestial bodies galaxies and space simultaneously enlarge at the same proportion it is the local effect of space-time expansion that determines formation and evolution of galaxies. Also in detail explain gravitational anomalies of solar system such as extra receding rate of lunar orbit the increase of astronomical unit the secular change of day length the earth’s temperature rise gradually the sun is becoming brighter and brighter as well as the extra acceleration of artificial aerocrafts and so on these questions can not be treated by current knowledge.