The Local Group is the
group of
galaxies that includes our galaxy, the
Milky Way. The group comprises over 30 galaxies, with its gravitational center located somewhere between the Milky Way and the
Andromeda Galaxy. The galaxies of the Local Group cover a 10 million
light-year diameter (see
1 E22 m for distance comparisons) and have a binary (dumbbell) shape. The group is estimated to have a total mass of (1.29 ± 0.14)
M☉. The group itself is one of many within the
Virgo Supercluster (i.e. the Local Supercluster).
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A group of galaxies containing a few dozen galaxies of which our own galaxy is a member. There are three
spiral galaxies: the
Milky Way, Andromeda, M33 and a giant
elliptical galaxy, Maffei I, as well as small ellipticals and irregula r galaxies. The shape of the Local Group is like a dog bone with concentrations of galaxies around the Milky Way and Andromeda. The radius of the Local Group is approximately three and a quarter million
light years.