I do not like the term "cosmology". I think its more like a religious thing. The title "cosmologist" is like calling someone a priest.
We know where the entire universe came from but as to the actual formation of the Earth and eventual evolution of exoplanets? Cosmology.
See? It all came from some point of light? My question to coin one of my favorite phrases from Bill Gaede:
What is all the black stuff surrounding the universe?