Cosmology and Galaxy Evolution

The field of cosmology studies the universe in its entirety.  The evolution of galaxies and their central black holes are particularly useful to understand both the relevant cosmological and galactic processes that shape galaxies over billions of years.  The length scales involved in these processes can range from an atomic level, when studying atomic and molecular transitions that are important in star forming gas clouds, to the cosmological scale, where tidal forces from distant galaxies create the initial rotation of a galaxy.