Nearby Galaxies and Galaxy Group Information
M83 is at the center of one of two subgroups within the Centaurus A/M83 Group, a nearby group of galaxies. Centaurus A is at the center of the other subgroup. These two groups are sometimes identified as one group and sometimes identified as two groups. However, the galaxies around Centaurus A and the galaxies around M83 are physically close to each other, and both subgroups appear not to be moving relative to each other.
Read more about this topic: Messier 83
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