Acknowledgements 1 You'd Have to Be Crazy to Say the Earth Moves Science or insanity? Nothing new under the Sun Astronomy rules, OK? 2 Why Did Copernicus Say the Earth Moves? Heavenly orbs Science or art? Ptolemy and the decline of cosmology How to avoid a crisis:the medieval stand-off How to create a crisis : Nicolaus Copernicus,cosmologist 3 Who Was Copernicus? Why Copernicus? Life and times Renaissance man Renaissance mathematician 4 What Was the Reaction? Small beginnings Copernicus and the astronomers Copernicus and the Churches Copernicus and the Aristotelians 5 What Difference Did it Make? A world of difference One physics or two? How the Earth moves Space:the final frontier 6 Last Words Glossary Further Reading
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