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The Andromeda Galaxy is approaching the Milky Way at about 110 kilometres (68 miles) per second. [128] It has been measured approaching relative to the Sun at around 300 km/s (190 mi/s) [1] as the Sun orbits around the center of the galaxy at a speed of approximately 225 km/s (140 mi/s).
List of nearest galaxies. This is a list of known galaxies within 3.8 megaparsecs (12.4 million light-years) of the Solar System, in ascending order of heliocentric distance, or the distance to the Sun. This encompasses about 50 major Local Group galaxies, and some that are members of neighboring galaxy groups, the M81 Group and the Centaurus A ...
The Andromeda Galaxy is approaching the Milky Way at about 300 km/s (200 miles per second) as indicated by blueshift. However, the lateral speed (measured as proper motion ) is very difficult to measure with sufficient precision to draw reasonable conclusions.
The most famous deep-sky object in Andromeda is the spiral galaxy cataloged as Messier 31 (M31) or NGC 224 but known colloquially as the Andromeda Galaxy for the constellation. M31 is one of the most distant objects visible to the naked eye, 2.2 million light-years from Earth (estimates range up to 2.5 million light-years). [54]
The Virgo Stellar Stream is a stream of stars that is believed to have once been an orbiting dwarf galaxy that has been completely distended by the Milky Way's gravity. See also. List of Andromeda's satellite galaxies; List of nearest galaxies; Local Group; Notes
This article documents the most distant astronomical objects discovered and verified so far, and the time periods in which they were so classified. For comparisons with the light travel distance of the astronomical objects listed below, the age of the universe since the Big Bang is currently estimated as 13.787±0.020 Gyr.
Current measurements suggest the Andromeda Galaxy is approaching the Milky Way at 100 to 140 km/s (220,000 to 310,000 mph). In 4.3 billion years, there may be an Andromeda–Milky Way collision, depending on the importance of unknown lateral components to the galaxies' relative motion.
The Andromeda Galaxy with M110 at upper left and M32 to the right of the core. The Andromeda Galaxy (M31) has satellite galaxies just like the Milky Way. Orbiting M31 are at least 13 dwarf galaxies: the brightest and largest is M110, which can be seen with a basic telescope.
The nearby Andromeda Galaxy, 2.5 million light-years away, contains a 1.4 +0.65 −0.45 × 10 8 (140 million) M ☉ central black hole, significantly larger than the Milky Way's. [105] The largest supermassive black hole in the Milky Way's vicinity appears to be that of Messier 87 (i.e., M87*), at a mass of (6.5 ± 0.7) × 10 9 (c. 6.5 billion ...
It is commonly used by stargazers to find the Andromeda Galaxy. The galaxy NGC 404, also known as Mirach's Ghost, is seven arcminutes away from Mirach. This star has an apparent visual magnitude of around 2.07, varying between 2.01 and 2.10, which at times makes it the brightest star in the constellation.