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Main reasons astronomers - PowerPoint PPT Presentation

History of Astronomy

History of Astronomy. Arny, Chapter 1. Introduction. Western astronomy divides into 4 periods Prehistoric (before 500 B.C. ) Cyclical motions of Sun, Moon and stars observed Keeping time and determining directions develops Classical (500 B.C. to A.D. 1400) Measurements of the heavens

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2.1 - Notes Early Ideas in the Heavens: Classical Astronomy

2.1 - Notes Early Ideas in the Heavens: Classical Astronomy. Ancient Greeks explained the sky by making careful, systematic observations using the naked eye, logic, mathematic, and geometry ?and they were very successful ? . Shape of the Earth. Ancient Greeks explained earth was round

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Main reasons astronomers - PowerPoint PPT Presentation

History of Astronomy

2.1 - Notes Early Ideas in the Heavens: Classical Astronomy