Hubble Space Telescope image of Arp 4.

This image contains two galaxies, a larger irregular galaxy, Arp 4, and a small spiral galaxy PGC 6629.

Credit: NASA, ESA, STScI, Julianne Dalcanton, Meli thev, Wikimedia Commons
https://commons.wikimedia.org/wiki/File:Arp_4_Hubble.jpg
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