What Lit Up The Early Universe, Numerous Faint Galaxies Or Quasars?
Wednesday, August 27, 2014 - 10:50
in Astronomy & Space
New simulations hope to uncover the origin of the ultraviolet light that bathes the cosmos, helping scientists understand how galaxies were built. "Which produces more light? A country's biggest cities or its many tiny towns?" asks Dr. Andrew Pontzen, University College London cosmologist and lead author of the study. "Cities are brighter, but towns are far more numerous. Understanding the balance would tell you something about the organisation of the country. We're posing a similar question about the universe: does ultraviolet light come from numerous but faint galaxies, or from a smaller number of quasars?" read more