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M33 is a spiral galaxy about 3 million light-years away in the constellation Triangulum. It is a member of the Local Group of galaxies, being the third largest galaxy in the group after our own galaxy and the Andromeda Galaxy, M31. Numerous H-II star-forming regions (the reddish/pink "knots") are visible. Several of these have their own NGC or IC numbers; in fact, there are 14 NGC/IC objects within the borders of M33. The most prominent of these is NGC 604, the large and bright H-II region near the bottom edge of the galaxy (slightly left of center).