The theory of General Relativity is not yet finished. Spherical coordinates  are not the same as Spacetime. How do you use them and what are the consequences? Read the article  

In his book ‘My Theory’ of 1917, Einstein described a spherical Universe. He abandoned his model in 1931, after seeing astronomer Hubble’s work on the redshift of distant galaxies. Now, we revive Einstein’s model by using Minkowski’s space-time. This results in a Universal model which needs neither Dark...