Astronomy 100 HW #2a

Astronomy 100 HW #2a - Astronomy 100 HW #2 1) a....

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Astronomy 100 HW #2 1) a. Copernicus’s model had the sun at the center of the universe with the planets orbiting around it in perfect circles. To justify the motion of the planets and occurrences such as retrograde motion he added multiple circles for each path, making his model much like the Ptolemaic model. b. Kepler changed this model by making the orbits ellipses instead of prefect circles. 3) This does not make sense because those who believed the earth was the center of the universe were the pioneers and the techniques and the basis of the ideas used to form the heliocentric model. This also does not make sense since while some ancient astronomers didn’t realize the earth goes around the sun, some ancient astronomers eventually did. 4) This does not make sense because the Copernican model is just as complex and just as flawed as the Ptolemaic model, thus making it very much disrespected in the first 50 years after its publication. 5) One reason for the rejection of Kepler’s idea of ellipses in the heliocentric model was
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This note was uploaded on 04/20/2008 for the course ASTR 100 taught by Professor Hayes-gehrke during the Spring '06 term at Maryland.

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Astronomy 100 HW #2a - Astronomy 100 HW #2 1) a....

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