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Johannes Kepler Essay

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Johannes Kepler was a German astronomer and mathematician who lived between 1671-1630. Kepler was a Copernican and initially believed that planets should follow perfectly circular orbits (“Johan Kepler” 1). During this time period, Ptolemy’s geocentric theory of the solar system was accepted. Ptolemy’s theory stated that Earth is at the center of the universe and stationary; closest to Earth is the Moon, and beyond it, expanding towards the outside, are Mercury, Venus, and the Sun in a straight line, followed by Mars, Jupiter, Saturn, and the “fixed stars”. The Ptolemaic system explained the numerous observed motions of the planets as having small spherical orbits called epicycles (“Astronomy” 2). Kepler is best known for introducing three effectual, applicable and valid laws of planetary motion by using the precise data he had developed from Tycho Brahe, a Danish astronomer, which helped Copernicus’s theory of the solar system gain universal reception (“Johan Kepler” 1). Nevertheless, he had made further effective contributions in the field of astronomy, which are valid to society and were used to change how the universe was perceived.
Johannes Kepler moved to Prague in 1600 where he worked as an assistant for Tycho Brahe, and eventually as the imperial mathematician to Rudolf II. Brahe allowed Kepler to see no more than a division of his capacious records. Brahe appointed Kepler the job of understanding the orbit of the planet Mars, which was predominantly difficult. Ironically, it was specifically the Martian data that permitted Kepler to devise the correct laws of planetary motion. Kepler was obliged eventually into the comprehension that the orbits of the planets were not the circles claimed by Aristotle and assumed indirec...


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...inventors.about.com/library/inventors/bl_Johannes_Kepler.htm
"Johannes Kepler: The Laws of Planetary Motion." Astronomy 161: The Solar System. Web. 17 Dec. 2011. .
Johnson, Michele. "NASA - NASA's Kepler Mission Confirms Its First Planet in Habitable Zone of Sun-like Star." NASA - Home. NASA, 05 Dec. 2011. Web. 17 Dec. 2011. http://www.nasa.gov/mission_pages/kepler/news/kepscicon-briefing.html
Mulder, Henry. "Tycho Brahe and Johannes Kepler." Science and You - Home - a Site to Make Sense of How the World Works and Why. Science and You, © 2000 - 2008 All Rights Reserved. Web. 17 Dec. 2011. http://www.scienceandyou.org/articles/ess_21.shtml
"Previous Posts - Mormonsandscience." Mormonsandscience - Religion & Science Blog. 19 Apr. 2011. Web. 17 Dec. 2011. http://www.mormonsandscience.com/1/previous/2.html


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