Contents

26 October 1990
Vol 250, Issue 4980

About The Cover

A false-color image of the core of the cluster of galaxies Abell 2029. Most of the objects are galaxies which reside within the halo of the massive giant that dominates the cluster. This galaxy is one of the largest and most luminous in the universe, 100 times brighter than our own Milky Way. See page 539. [Photograph by Juan M. Uson, Stephen P. Boughn, and Jeffrey R. Kuhn]