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Copernicus is mainly known for his revolutionary proposition of a heliocentric universe - that is to say, he hypothesized that the sun was the center of the universe. The generally accepted idea prior to Copernicus's theory was that the universe was centered around the Earth. We now know that Copernicus was also wrong, as the sun is one of many stars in the Milky Way, one of many galaxies.

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15y ago

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