what is Nucleosynthesis - Nucleosynthesis is the creation of new atomic nuclei, the centers of atoms that are made up of protons and neutrons. Stars can create nuclei through two processes: either by combining two smaller nuclei (called fusion) or breaking a larger nucleus into multiple nuclei (called fission).
What Came Before the Big Bang? - The initial singularity is a singularity predicted by some models of the Big Bang theory to have existed before the Big Bang and thought to have contained all the energy and spacetime of the Universe.