What happened after the Big Bang Theory?
The Big Bang expresses the understanding of an evolving universe from a one dimensional singularity to the traditional fourth dimensional model of our ever-accelerating universe. In general, existence came into being upon the dimensional unfolding of Space and Time from the condition of a singularity (formed during a degree of convergence in Space and Time) into the reality of our traditional fourth dimensional SpaceTime continuum. The Big Bang is more a reference to an unfolding evolutionary model of existence in which SpaceTime allows for the integration of positive matter (or an explosion of multiple dimensions from a more singular dimensional containment; i.e. singularity). The concept of this singularity provides for a temporal confinement in the unification of all the primary forces of the physics (i.e., gravitational, electromagnetic, strong and weak). Immediately after this creation event, the evolutionary expansion of the primary quantum forces provide for a dense and hot plasma soup which expands to permeate its unfolding dimensional containment. The universe continued to decrease in density and fall in temperature, hence the typical energy of each particle was decreasing. Over a long period of time, the slightly denser regions of the nearly uniformly distributed matter gravitationally attracted nearby matter and thus grew even denser, forming the four possible types of matter are known as cold dark matter, warm dark matter, hot dark matter, and baryonic matter. Eventually gas clouds, stars, galaxies, and the other astronomical structures we observe today, began to precipitate in the expanse of the expanding universe. Note: The details of this process depend on the model used, and the amount and type of matter, and localized quantum instabilities present to facilitate the accretion of positive mass density in the Universe.