Number 15 (Story #3), January 3, 1991 by Phillip F. Schewe and Ben Stein THE COLD DARK MATTER version of the big bang theory, one of the most widely accepted models of cosmology, has been hard pressed by a new analysis by Oxford astronomers of 6-year-old data from the Infrared Astronomical Satellite which shows that large extended collections of galaxies and galaxy-voids are even more prevalent than thought before. Cold dark matter, consisting of slow-moving non-radiating particles of unknown identity, is thought by some to account for 90% of the matter in the universe; but a cosmology based on this hypothesis does not seem to have had enough time to allow evolution of the stupendous objects seen in the sky. (Nature, January 3, 1991.)