Understanding The Universe: From Quarks To The Cosmos - Lincoln, Donald (Fermi National Accelerator Laboratory, Usa)

The Big Bang, the birth of the universe, was a singular event. All of the matter of the universe was concentrated at a single point, with temperatures so high that even the familiar protons and neutrons of atoms did not yet exist, but rather were replaced by a swirling maelstrom of energy, matter and antimatter.