Lecture6 - Origin of Modern Astronomy Earth's place in the cosmos The nature of planet motion How we understand"the truth Addressing these three

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Earth's place in the cosmos The nature of planet motion How we understand “the truth” Addressing these three key issues led to the birth of science . Origin of Modern Astronomy
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Announcements I need to have your grade passwords This password will allow you to check your grade It must be an alpha-numeric string up to 10-character long Make sure you write it for yourself, too, otherwise you might forget it.
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Assigned reading: Chapter 4 When reading a chapter, make sure you study the Guidepost, the Connections, the Portfolio inserts and the Summary at the end
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Archeoastronomy There is evidence that Human kind has paid very closed attention to the sky, its motions and periodicity. Humans always tried to explain them Archeoastronomy a blend of superstition, astrology, religion, but also common sense Greeks were the first to try to understand (logically) the universe. Thales of Miletus: first, true scientific attitude, humans can understand Very different from previous “mysteric” attitude: humans cannot comprehend mysteries Unknown vs. Unknowable Pythagoras: universe ruled by geometrical, mathematical relationship This notions still fundamental today
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The birth of modern science Thales: Universe can be understood Pythagoras: Observations show that rules are mathematical Plato: observations imperfect, pure thought can achieve the truth All ingredients there for the methods of modern science: have a theory and test it against reality
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This note was uploaded on 05/19/2008 for the course ASTRON 100 taught by Professor Minyun during the Spring '08 term at UMass (Amherst).

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Lecture6 - Origin of Modern Astronomy Earth's place in the cosmos The nature of planet motion How we understand"the truth Addressing these three

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