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Galaxy Cluster Abell 2256
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Galaxy Cluster Abell 2256

March 17, 2003
Abell 2256 is a collection of more than 500 galaxies a billion light years distant and 10 million light years across. The X-rays originate in a hot 80 million degree plasma which fills the region between the galaxies. This ROSAT image shows the double structure in the center of the field, which shows the merging of two clusters.


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