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Feb 19, 1473
Copernicus was Born
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Period: Feb 19, 1473 to
The Universe
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Jan 1, 1541
Copernicus published a short austronomical manuscript
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Galileo's first know astronomical observation
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Galileo published his letters about sunpots based on observations he made
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Newton was born
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Newton published a book about mathematical principles of natural philosophy
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Newton died
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Edwin Hubble is born
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Hubble proves that the universe is expanding
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Hubble died