The Most Massive Objects in the Modern Universe –Primordial Relics of the Cosmic Microwave Background
“In Big Bang cosmology, the cosmic microwave background (CMB) is in some sense a map of fluctuations thought to be linked to variations in the matter density of the primordial expansion of the universe,” explains Harvard astronomer Matthew Ashby in an email to The Daily Galaxy about the formation of massive galaxy clusters from the cosmic web of filaments, nodes, and voids, with the nodes being clusters of galaxies.”