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In Chapter 2 you learned about the old geocentric model of the universe and the

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In Chapter 2 you learned about the old geocentric model of the universe and the development of the heliocentric model.  For this assignment I would like you to answer the following questions.  
1.  Write a paragraph describing the geocentric  model of the solar system–include information about what evidence there is for it and what evidence there against it (i.e. the evidence that supports the heliocentric model). 
2.  Write a paragraph describing the various contributions to the heliocentric model of the solar system by these astronomers: Nicolas Copernicus, Tycho Brahe, and Galileo Galilei.  Each one had several contributions so be as detailed as possible.
3.  Write a paragraph describing Johannes Kepler’s contributions to the heliocentric model of the solar system–describe each of his three laws of planetary motion.  For the 2nd & 3rd law provide some elaboration (for the 2nd law what is its implication for planetary motion and give an example of how is third law works with 1-2 planets in the solar system)
4.  Write a paragraph-Explain how Isaac Newton uses his laws of motion and the law of gravity to explain how planets orbit the sun in the heliocentric model (basically explain how a planet’s orbit works using these laws).  I don’t necessarily want a repeat of what each law is, rather an explanation of how/why planets orbit the Sun using his laws of motion & law of gravity. 
Each answer should be about a paragraph in length.  Make sure to answer the questions in your own words–I’m not looking for a word for word explanation from the book or the bullet points at the end of the chapter.

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