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What was Galileo's relationship with Copernicus's ideas?
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Copernicus published his famous work, On the Revolutions of the Heavenly Bodies in 1543 when he was on his deathbed. He did not wish to create a stir with religious authorities, and in fact dedicated his work to Pope Paul III. He never viewed the stars through a telescope, but rather determined all his calculations mathematically. His most important finding was that the solar system was heliocentric, not geocentric as Aristotle had claimed. In making this statement, he wrote
In the middle of all this sits the Sun enthroned. How could we place this luminary in any better position in this most beautiful temple from which to illuminate the whole at once?
There were a number of errors in his determinations; for instance he believed that the Universe was finite, that the planets revolved around the sun in perfect circular orbits, and that the earth's rotation caused the movement of the stars.
Galileo attempted to reconcile Copernicus' theory with the teachings of the church; however he was quite stubborn. When church authorities disputed his insistence that the universe was completely mathematical ( a conflict with the church's teaching) he mocked church authorities. This is inconsistent with Copernicus, who avoided conflict with the church. In a letter to Johannes Kepler, another pioneer in astronomy, Galileo wrote:
Here at Padua is the principal professor of theology, whom I have repeatedly and urgently requested to look at the moon and planets through my glass, which he obstinately refused to do. Why are you not here? What shouts of laughter we should have at this glorious folly!
When Church authorities condemned Galileo's work, he responded by publishing Dialogue Concerning Two Systems of the World, Ptolemaic and Copernican. He suggested in the work that Copernicus was correct and those who followed the Ptolemaic theory (largely along Aristotelian lines) were fools; he even referred to the proponent of Ptolemy's ideas as "Simplico," a thinly veiled reference to Pope Urban VIII who had been Galileo's friend. Urban repaid Galileo by having him arrested by the Inquisition. Under threat of torture, he recanted all his previous theories and was ordered to remain under house arrest for the remainder of his life. Stubborn and feisty to he end, before entering his virtual prison and seeing the skies for the last time, he looked up and said of the earth, "It's still moving."
Posted by larrygates on July 30, 2011 at 12:07 AM (Answer #1)
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