Einstein's radius of universe
From Conservapedia
Einstein's radius of universe, usually denoted in cosmology by 
, is the radius of curvature of space of Einstein's universe.
The exact length of Einstein's radius of universe is 
, where 
is speed of light in vavcuum, 
is Newtonian gravitational constant, and 
is density of space.
Assuming that we live in stationary (neither expanding nor contracting) Einstein's universe in which the Hubble constant is ca. 
as established by observations, the Einstein's radius of universe is ca. 13 bilion light years. The exact number is then 
.
