Local Group galaxy cluster. Illustration showing some 26 galaxies in the Local Group, shown relative to our spiral Milky Way Galaxy (centre). A grid marks the celestial equator. Solid red lines show galaxies above the grid, while dotted red lines are below the grid. The largest galaxies are the Milky Way and Andromeda (M31) and M33. The Local Group is a grouping of galaxies that are gravitationally bound to each other, and that includes our Milky Way galaxy.