What is the Andromeda?

The Andromeda Galaxy, also known as Messier 31 or M31, is a spiral galaxy located about 2.5 million light-years (2.4×1019 km) from Earth. Located in the Andromeda constellation, it is the closest spiral galaxy to the Milky Way, where our solar system is, although it isn’t the closest overall galaxy to the Milky Way. It can be found in Constellation Andromeda, the Chained Maiden. It is located northwest of Mu and Beta Andromedae; west of Nu Andromedae; northeast of Theta and Sigma Andromedae; north of Pi, Delta, and Epsilon Andromedae; and south of Theta and Omega Cassiopeiae. Andromeda can be seen by Human eyes from Earth without a telescope as a “little cloud”. The Andromeda Galaxy has an apparent magnitude of 3.4, which makes it bright enough to be seen by the naked eye on moonless nights. The Andromeda Galaxy is approaching the Milky Way at a rate of around 110 kilometers per second.

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