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The collision of the Milky Way and the Andromeda Galaxy



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The collision of the Milky Way and the Andromeda Galaxy
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This artist's impression shows the collision between the Milky Way and the Andromeda Galaxy, many billions of years in the future. This scenario is based on observed data and analytically grounded fantasy. An impression of how the Milky Way was formed can be obtained from the picture accompanying the astronomical question from week 11: 'How fast is the Earth?'

Credit: James Gitlin.