Abell 520 (also known as A520) is a galaxy cluster in the Orion constellation, located at a co-moving radial distance of 811 Mpc (2,645 Mly) and subtends 25 arcminutes on the Earth sky. The cluster possesses an unusual substructure resulting from a major merger.
Abell 520 (also known as A520) is a galaxy cluster in the Orion constellation, located at a co-moving radial distance of 811 Mpc (2,645 Mly) and subtends 25 arcminutes on the Earth sky. The cluster possesses an unusual substructure resulting from a major merger.
Source: Wikipedia "Abell 520" · CC BY-SA 4.0
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