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The Local Group is the galaxy group that includes the Milky Way, where Earth is located. It has a total diameter of roughly 3 megaparsecs (10 million light-years ; 9 × 10 19 kilometres ), [ 1 ] and a total mass of the order of 2 × 10 12 solar masses (4 × 10 42 kg). [ 2 ]
Size (left) and distance (right) of a few well-known galaxies put to scale. There are an estimated 100 billion galaxies in all of the observable universe. [1] On the order of 100,000 galaxies make up the Local Supercluster, and about 51 galaxies are in the Local Group (see list of nearest galaxies for a complete list).
The Local Group is a member of the supercluster, but not the cluster. Most distant galaxy group Nearest galaxy group Local Group: 0 distance This is the galaxy group that our galaxy belongs to. Nearest neighbouring galaxy group IC 342/Maffei Group: Most distant proto-cluster A2744z7p9OD: z=7.88 [23] Nearest proto-cluster Most distant massive ...
This is a list of known galaxies within 3.8 megaparsecs ... 15.5 Local Group [1] Isolated, star forming group member 3,000 ly 108 UGC 4879 (VV124) [73] IAm 3.956
Its distance from Earth is about 25.2 million light-years or 7.72 megaparsecs, [2] similar to the distance of M101 (NGC 5457) in the constellation Ursa Major. [5] Both were once considered to be part of the Local Group, [6] but are now known to be among the dozen bright spiral galaxies near the Milky Way but beyond the confines of the Local ...
This is unusual for dwarf elliptical galaxies in general, [9] and the reason is unclear. [13] Unlike M32, M110 lacks evidence for a supermassive black hole at its center. [14] The interstellar dust in M110 has a mass of (1.1–1.8) × 10 4 M ☉ with a temperature of 18–22 K, and the interstellar gas has (4–7) × 10 6 M ☉.
Composite image showing young stars in and around molecular cloud Cepheus B.. This is a list of star-forming regions located in the Milky Way Galaxy and in the Local Group.Star formation occurs in molecular clouds which become unstable to gravitational collapse, and these complexes may contain clusters of young stars and regions of ionized gas called H II regions.
NGC 147 (also known as DDO3 or Caldwell 17) is a dwarf spheroidal galaxy about 2.58 Mly away in the constellation Cassiopeia. NGC 147 is a member of the Local group of galaxies and a satellite galaxy of the Andromeda Galaxy (M31). It forms a physical pair with the nearby galaxy NGC 185, [5] another remote satellite of M31.