NGC55: NGC55 is an irregular galaxy visually within the constellation Sculptor. NGC55 probably started out life as a barred spiral galaxy (it is presenting to us nearly edge-on), but its presumed gravitational interactions with its neighbor NGC300 are deforming it. Those gravitational forces also are causing the unusually active star-forming taking place in this galaxy, evidenced by the pinkish regions (particularly the bright core). The bright blue dots are clusters of bright young stars. NGC55 is relatively close to us, about 6 million light years away, and is a member of the Sculptor Galaxy Group. It measures about 50,000 light years across (about half what our Milky Way measures).
Copyright 2014 Mark de Regt