</ref>.
Arp's research contradicts the idea of expanding universe and confirms the idea that the universe is stationary as it was shown with relativistic physics and Newtonian math in 1985, when it was discovered that the [[Hubble constant]] of stationary universe is
:<math>H_o=c/R_E=\sqrt{4\pi G\rho}</math>,where <math>c</math> is speed of light in vacuum, and <math>R_E</math> is radius of curvature of space (called ''"[[Einstein's radius]]"''), <math>G</math> is Newtonian gravitational constant, and <math>\rho</math> is density of space
<ref>
See [[Essay:Hubble redshift in Einstein's universe]]. Except conservapedia (and briefly in RW, before access to the paper were blocked by the University of Warsaw, Poland) it was never published by any mainstream scientific journal and therefore remains unknown to the physicists and astronomers
</ref> and so the cosmological redshift is exactly Arp's [[Intrinsic redshift]] with which one may measure the average density of the universe. :<math>H_o=70km/s/Mpc</math> implies :<math>\rho=6\times 10^{-27}kg/m^3</math>
==References==