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NGC 5218
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- 1Image of peculiar galaxy pair Arp 104 shared online▼Image of Arp 104, also known as NGC 5216 and NGC 5218, or Keenan’s System, from the Atlas of Peculiar Galaxies by Halton
An image of Arp 104, also known as Keenan's System and made up of the galaxies NGC 5216 and NGC 5218, is circulating among space enthusiasts. The pair, catalogued in Halton Arp's 1966 Atlas of Peculiar Galaxies as an elliptical galaxy connected to a spiral, is linked by a bridge of stars and gas roughly 7,000 light-years long. Commenters are sharing the striking view of the interacting galaxies.