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Harlow shapley first located the center of the milky way galaxy in 1917 by
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Harlow shapley first located the center of the milky way galaxy in 1917 by

User PSyToR
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He used parallax to calculate the position of the sun within the galaxy. Since the sun is the center, he used parallax to find the center of the galaxy. He used RR Lyrae stars to estimate the size of the galaxy.
User Balu Mallisetty
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