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Tycho Brahe Johannes Kepler Copernicus
 * Suggested Mercury and Venus revolved around the sun but the moon, sun, and other planets revolved around the earth
 * Made more extensive observations than anyone ever had which produced astronomical data later to be used
 * Needed to abandon the epicycles in the Copernican system
 * By merging math and Brahe’s observations he created the first astronomical model that portrayed motion (elliptical orbit)
 * Solved the problem of planetary motion but could not explain elliptical/orbital motion which Isaac Newton later solved

Galileo
 * Countered the Ptolemaic system (geocentrism)
 * Started the heliocentric system where the Sun, instead of the Earth, was in the center
 * This system was still not really accurate from what we understand to be true today, the only real difference was what was in the center of the universe


 * First observed outer space using the Dutch telescope
 * Observed the stars and the rest of the universe, found it was much more vast and included many more planets, and stars and other things that had never been thought of before
 * He argued that this discovery proved indefinitely the heliocentric system to be true

Copernicus- heliocentric Galileo- telescope revealed new ideas of heaven and earth Brahe and Kepler- elliptical/ orbital motion Bacon- empiricism and new knowledge descartes- analytic geometry

Prezi Link: http://prezi.com/oh-zsrxkq_xa/?utm_campaign=share&utm_medium=copy

Who did What: Copernicus/Galileo- Olyvia Brahe/Kepler- Marta Bacon/Descartes -Davy Connections- Group Prezi- Ethan