Page 4 - 89 history of astronomy_opt
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3. ANCIENT GREEK ASTRONOMY
                                            4. THE REIGN OF EPICYCLES–FROM
                                         PTOLEMY TO COPERNICUS
                                            BOOK II. THE DYNAMICAL PERIOD
                                            5. DISCOVERY OF THE TRUE SO-
                                         LAR SYSTEM–TYCHO BRAHE–KEPLER
                                            6. GALILEO AND THE TELESCOPE–
                                         NOTIONS OF GRAVITY BY HORROCKS,
                                         ETC.
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