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== Tycho's model of the Universe ==

== Tycho's model of the Universe ==

Tycho Brahe proposed a model that was a hybrid of [[geocentrism]] and [[heliocentrism]]: in his system, the Moon and the Sun revolved around a fixed Earth, while all other ''planets'' (Mercury, Venus, Mars, Jupiter and Saturn) revolved around the Sun. Mathematically, this model is identical to a heliocentric model,<ref>[http://www.bluffton.edu/~bergerd/NSC_111/science3.html Models of the Solar System]</ref> with the advantage of avoiding the paradoxes of a moving Earth as perceived in his time (no [[stellar paralax]]es, flying birds couldn't mantain flight if the Earth was moving, etc).<ref>[http://www.astro.umass.edu/~mhanner/Lecture_Notes/Jan28_Heliocentric.txt Lecture Notes - UMass Astronomy]</ref> He also did this to hold to the tradition of a still Earth as most in his time believed due to the ancient traditions of Ptolemy and Aristotle.

Tycho Brahe proposed a model that was a hybrid of [[geocentrism]] and [[heliocentrism]]: in his system, the Moon and the Sun revolved around a fixed Earth, while all other ''planets'' (Mercury, Venus, Mars, Jupiter and Saturn) revolved around the Sun. Mathematically, this model is identical to a heliocentric model,<ref>[http://www.bluffton.edu/~bergerd/NSC_111/science3.html Models of the Solar System]</ref> with the advantage of avoiding the paradoxes of a moving Earth as perceived in his time (no [[stellar paralax]]es, flying birds couldn't maintain flight if the Earth was moving, etc.).<ref>[http://www.astro.umass.edu/~mhanner/Lecture_Notes/Jan28_Heliocentric.txt Lecture Notes - UMass Astronomy]</ref> He also did this to hold to the tradition of a still Earth as most in his time believed due to the ancient traditions of Ptolemy and Aristotle.

==Legacy==

==Legacy==

*Brahe remained a life-long opponent of [[Copernicanism]]; he accurately calculated that the math behind Copernicus' heliocentric universe was inaccurate. In response he created his own model, in which he proposed the Sun orbited the Earth and everything else orbited around the Sun. His immense prestige helped to postpone the conversion of other astronomers to the new theory, as they saw his view as a compromise between a heliocentric and geocentric universe. [http://web.missouri.edu/~hanuscind/8710/Barber1961.pdf]

*Brahe remained a lifelong opponent of [[Copernicanism]]; he accurately calculated that the math behind Copernicus' heliocentric universe was inaccurate. In response he created his own model, in which he proposed the Sun orbited the Earth and everything else orbited around the Sun. His immense prestige helped to postpone the conversion of other astronomers to the new theory, as they saw his view as a compromise between a heliocentric and geocentric universe. [http://web.missouri.edu/~hanuscind/8710/Barber1961.pdf]

== References ==

== References ==