The images above illustrate the formation formation of clusters and large-scale filaments in the Cold Dark Matter model with dark energy. The frames show the evolution of structures in a 43 million parsecs (or 140 million light years) box from redshift of 30 to the present epoch (upper left z=30 to lower right z=0).

Source: Formation of the large-scale structure in the Universe: filaments, From quantum foam to galaxies: formation of the large-scale structure in the UniverseKavli Institute for Cosmological Physics at The University of Chicago.