Editing Tychonic system (section)

=== Legacy ===
After Tycho's death, [[Johannes Kepler]] used Tycho's observations to demonstrate that the [[orbit]]s of the planets are [[ellipse]]s and not [[circle]]s, creating the modified [[heliocentrism|Copernican]] system that ultimately displaced both the Tychonic and Ptolemaic systems. However, the Tychonic system was very influential in the late 16th and 17th centuries. In 1616, during the [[Galileo affair]], the papal [[Congregation of the Index]] banned all books advocating the Copernican system, including works by Copernicus, Galileo, Kepler and other authors until 1758.<ref name=retrying>{{cite book|last=Finochiario|first=Maurice|title=Retrying Galileo|date=2007|publisher=University of California Press}}</ref><ref name=h218>Heilbron (2010), pp. 218–9</ref> The Tychonic system was an acceptable alternative as it explained the observed phases of Venus with a static Earth. [[Jesuit]] astronomers in China used it, as did a number of European scholars. Jesuits (such as [[Clavius]], [[Christoph Grienberger]], [[Christoph Scheiner]], [[Odo Van Maelcote]]) supported the Tychonic system.<ref>{{cite journal |last1=Pantin |first1=Isabelle  |date=1999 |title=New Philosophy and Old Prejudices: Aspects of the Reception of Copernicanism in a Divided Europe |journal=[[Stud. Hist. Philos. Sci.]] |volume=30 |issue=237–262 |page=247 |doi=10.1016/S0039-3681(98)00049-1 |bibcode=1999SHPSA..30..237P}}</ref>

The discovery of [[Aberration (astronomy)|stellar aberration]] in the early 18th century by [[James Bradley]] proved that the Earth did in fact move around the Sun and Tycho's system fell out of use among scientists.<ref>{{cite journal |last1=Bradley |first1=James |title=IV. A letter from the Reverend Mr. James Bradley Savilian Professor of Astronomy at Oxford, and F. R. S. to Dr. Edmond Halley Astronom. Reg. &c. giving an account of a new discovered motion of the fix'd stars |journal=Phil. Trans. |date=January 1728 |volume=35 |issue=406 |pages=637–661 |doi=10.1098/rstl.1727.0064 |location=London |doi-access=free}}</ref><ref>Seligman, Courtney. ''Bradley's Discovery of Stellar Aberration''. (2013).  http://cseligman.com/text/history/bradley.htm</ref> In the modern era, some [[Modern geocentrism|modern geocentrists]] use a modified Tychonic system with elliptical orbits, while rejecting the concept of relativity.<ref>Plait, Phil. (Sept. 14, 2010). Geocentrism Seriously? ''Discover Magazine.'' http://blogs.discovermagazine.com/badastronomy/2010/09/14/geocentrism-seriously/#.UVEn7leiBpd {{Webarchive|url=https://web.archive.org/web/20191025232051/http://blogs.discovermagazine.com/badastronomy/2010/09/14/geocentrism-seriously/#.UVEn7leiBpd |date=2019-10-25 }}</ref><ref>Musgrave, Iam. (Nov. 14, 2010). Geo-xcentricities part 2; the view from Mars. ''Astroblog.'' http://astroblogger.blogspot.com/2010/11/geo-xcentricities-part-2-view-from-mars.html</ref>