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The Andromeda Galaxy, The Closest Galaxy To The Milkyway
The Andromeda Galaxy (M31) is the closest large galaxy to the Milky Way and is one only ten galaxies that can be seen unaided from the Earth. In approximately 4.5 billion years the Andromeda Galaxy and the Milky Way are expected to collide. It is accompanied by at least 10 satellite galaxies the most notable of which is the Triangulum Galaxy. Fun Fact: The Andromeda Galaxy is approaching the Milky Way at approximately 100 to 140 kilometres per second
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