  This is an updated version of my paper "An outline of radiatively-driven
cosmology" (Kurucz 2000). Here the Big Bang universe is replaced by a finite
cellular automaton universe with no expansion (Kurucz 2006). The Big Bang is
replaced by many little bangs spread throughout the universe that interact to
produce the initial perturbations that form Population III stars, globular
clusters, and galaxies, but no large-scale structure. These perturbations
evolve into the universe as we now observe it. Evolution during the first
billion years is controlled by radiation. Globular clusters are formed by
radiatively-driven implosions, galaxies are formed by radiatively-triggered
gravitational collapse of systems of globular clusters, and voids and the
microwave background are formed by radiatively-driven expansion. After this
period most of the strong radiation sources are exhausted and the universe
relaxes into gravitational old age as we know it. To relieve the boredom we
present the results of gedanken experiments (Kurucz 1992) in a traditional,
linear, chronological sequence in the hope of stimulating research on the many
topics considered.
