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Podcast: Science 101
Episode: The Andromeda Galaxy is a barred spiral galaxy and is the closest major galaxy to the Milky Way
Description: It has a diameter of about 46.56 kiloparsecs (152,000 light-years)[8] and is approximately 765 kpc (2.5 million light-years) from Earth. The galaxy's name stems from the area of Earth's sky in which it appears, the constellation of Andromeda, which itself is named after the princess who was the wife of Perseus in Greek mythology.