Abell 2151 the Hercules cluster

by: A.Block/MLSC/Univ.of Az/Novapix
Reference: a-amg01-01502
Date: 2011-07-31

Abell 2151, the Hercules cluster, is a small, irregular cluster, with a core membership of fewer than 100 galaxies, with none strongly dominant central galaxy. It is more than 360 million light-years away.

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