No Big Bang in the Non-Expanding Universe

A theory of gravitation in flat space-time is briefly summarized and applied to cosmological models. These models start with a uniformly distributed gravitational field without matter. Gravitational energy is converted to matter and the total energy of matter and gravitation is conserved. The arising universe has no singularity (no big bang) and it is not expanding. The redshift is a gravitational effect. It follows by converting gravitation energy to matter changing the gravitational field. This is another gravitation theory different from general relativity and it also gives for weak gravitational fields the same results to measurable accuracy as general relativity. The application to cosmology of gravitation in flat space-time has no singularity, i..e. not as general relativity with a singularity, called big bang.