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he was born
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he studies at university of krakow
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he took a position as canon in the cathercral in Frombork
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he wrote "The little commentary" to tell about his heliocentric theory
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he had mostly completed his astronomical manuscript after 16 years
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he agreeded to publish his idea "On the revelutions of celestial spheres"
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he died
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he was born
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he shares his oppinion of the heliocentric model
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he invented a mechanical device for mathematical calculations
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he first astronimical obersvation (visible supernova)
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he made an instrument 3 times as powerful as the dutch device
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he first saw the orbiting moons around jupiter with is newly enhanced telescope
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he found that venus circled the sun
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he recieved permission from the pope to publish his theory of the tides, after being prohibited
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he publishes "Dialogue concerning the two cheif world systems"
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he called for trial for defending the heliocentric model
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he publishes "Discourses and mathematical demonstrations"
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he died