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      Scientific American November 1978

      Rich Clusters of Galaxies

      Some 10 percent of all galaxies belong to rich clusters, systems with thousands of members embedded in hot gas. Such a cluster is a gravitational maelstrom with giant galaxies close to its center

      • By Paul Gorenstein, Wallace Tucker on November 1, 1978

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      More in the November 1978 issue of Scientific American
      • Books, November 1978
      • The Mechanisms of Abrasive Machining
      • Fusion Power with Particle Beams
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