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Anne's Picture of the Day: Arp 297, a Quartet of Galaxies

March 13, 2013 Arp 297, a quartet of galaxies in Boötes Image Credit & Copyright: Adam Block/Mount Lemmon SkyCenter/University of Arizona ( Arp 297 is a quartet of galaxies, consisting of NGC 5752, NGC 5753, NGC 5754 and NGC 5755, which looks like a compact group but actually consists of two galaxy pairs at quite [continue reading]