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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"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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