The Birth of the First Generation of Stars

Abstract

Our expanding universe, which we were able to analyze from the time of its creation to the formation of galaxies, was opaque and nontransparent for the first half-million years when radiation decoupled and the temperature dropped to approximately 3000 K. At that time, the universe, still closely packed in one mass though local concentration became more pronounced, became a transparent red supergiant with a brilliant red light in every part of the sky. Every point of the universe at this time glowed with the brilliance of the sun.