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Encyclopedia > Galaxy clusters
Groups and clusters of galaxies

  Results from FactBites:
 
Hercules Cluster of Galaxies (0 words)
This cluster, Abell 2151 in Hercules, is the prototype spiral-rich cluster.
It is not as rich in galaxies, nor as centrally concentrated, as the Coma cluster.
Clusters of this kind may be rich in spiral and irregular galaxies, and in Abell 2151 we see many interacting galaxy pairs and small groupings of galaxies.
ESA Portal - XMM-Newton mosaics the Coma cluster of galaxies (0 words)
Galaxies in the Universe are often to be found in clusters.
Clusters are also believed to contain, in addition to the baryonic ("ordinary") matter, another component, dark matter whose properties are not well understood and whose presence can probably only be detected by its gravitational influence.
The orientation of NGC 4839 in the optical coincides with the orientation of the tail.
  More results at FactBites »


 

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