title: Cosmology: The oldest cosmic light.
authors: Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544, USA.
authors: David
authors: D
authors: Spergel
authors: Center for Astrophysics &Space Sciences, Department of Physics, University of California, San Diego, La Jolla, California 92093-0424, USA.
authors: Brian
authors: B
authors: Keating