books.google.com.au - Newly revised edition of Professor Crowe's accessible, enlightening book re-creates the change from an earth-centered to a sun-centered conception of the solar system. The work is organized around a hypothetical debate: Given the evidence available in 1615, which system (Ptolemaic, Copernican, Tychonic,...http://books.google.com.au/books/about/Theories_of_the_World.html?id=IGlhN0MI87oC&utm_source=gb-gplus-shareTheories of the World
