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Andromeda_Galaxy astronomical_object 천문학 galaxy universe astronomy spiral_galaxy 우주 atmosphere_of_earth image
The Andromeda Galaxy (/ænˈdrɒmᵻdə/), also known as Messier 31, M31, or NGC 224, is aspiral galaxy approximately 780 kiloparsecs(2.5 million light-years) from Earth.[4] It is the nearest major galaxy to the Milky Way and was often referred to as the Great Andromeda Nebula in older texts. It received its name from the area of the sky in which it appears, the constellation of Andromeda, which was named after the mythological princessAndromeda.