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***NSBL-RC-014 Realistic Decelerating Cosmology and the Return to Contraction**

**Abstract**

For cosmological theory without the bizarre vacuum-driven acceleration, and in the spirit of ``realistic non-singular cosmology'', we examine the effect of adjusting the value of the Hubble fraction in order to obtain a reasonable fit with the large data set of supernovae magnitudes and redshifts. Adopting a value of the Hubble fraction equal to 0.53, we obtain a pleasing fit for a theory with a negative graviton density, with a matter fraction of 1.12, a decelerating parameter of 0.56, and the remaining time before the return to contraction
of about 770 Gyr. For a theory with a negative vacuum density, we obtain a pleasing fit with a matter fraction of 1.02, a decelerating parameter of 0.53, and a remaining time of about 125 Gyr.

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nazirbaaklini@yahoo.com **