Originally Posted By: Finiter
in my model, the universe has no beginning. It always exists as we now observe it, as a 'system of huge masses of atoms/molecules'. During expansion, the internal energies of these huge masses change into their speeds and during contraction, the speeds change into internal energies.


Finiter's universe has no beginning - it is infinite.
If you try to trace its history back through this "infinite time", you find that each cycle of expansion and contraction is preceded by a similar cycle, ad infinitum.

Is this not infinite regression?

There never was nothing.