Illustrating the Phaenomena: Celestial Cartography in Antiquity and the ... - Elly Dekker - Google Books

http://books.google.de/books?id=UICNnYPYv8kC&pg=PA417

The introduction of the moving sphere as a model for understanding the celestial phenomena caused a great breakthrough in scientific thinking about the structure of the world. It provided the momentum for making celestial globes and mapping the stars.…