Tycho Brahe (14 December 1546 - 24 October 1601), was Danish nobleman Known for his accurate and comprehensive astronomical and planetary observation.
Tycho believed that if the earth orbited the Sun annually there should be an observable stellar parallax over any period of six month during which the angular orientation of a given star would change thanks to earth's changing position. The Copernican explanation for this lack of parallax was that the stars were such a great distance from earth that earth's orbit was almost insignificant by comparison.
Tycho believed that if the earth orbited the Sun annually there should be an observable stellar parallax over any period of six month during which the angular orientation of a given star would change thanks to earth's changing position. The Copernican explanation for this lack of parallax was that the stars were such a great distance from earth that earth's orbit was almost insignificant by comparison.
In this depiction of the Tychonic system, the object on blue orbit (the Moon & the Sun) revolve around the earth. The objects on orange orbit (Mercury,Venus, Mars, Jupiter & Saturn) revolves around the sun. Around all is a sphere of fixed stars.
Above explained planetary motion can be understood in the figure given below
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