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136 AD- Geocentric solar system, Claudius Ptolemaeus, heroism.
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1514 AD- Heliocentric solar system, universe, created models.
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1572 AD- Instrument of Brahe, movement of planets.
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1604 AD- Universal law, Hydrostatic balanced, sun center.
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1609 AD- Very advanced astronomer, explained planetary motion.
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1668 AD- Improved first telescope, laws of motion.