The Perseus Galaxy Cluster (IMAGE)

NASA/Goddard Space Flight Center

The Perseus Galaxy Cluster

Caption

The Perseus galaxy cluster, located about 240 million light-years away, is shown in this composite of visible light (green and red) and near-infrared images from the Sloan Digital Sky Survey. Unseen here is a thin, hot, X-ray-emitting gas that fills the cluster.

Credit

Robert Lupton and the Sloan Digital Sky Survey Consortium

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