books.google.com.au - Since man first looked towards the heavens, a great deal of effort has been put into trying to predict and explain the motions of the sun, moon, and planets. This book describes the theories of planetary motion that have been developed through the ages, from the homocentric spheres of Eudoxus, to Einstein's...http://books.google.com.au/books/about/From_Eudoxus_to_Einstein.html?id=aJuwFLGWKF8C&utm_source=gb-gplus-shareFrom Eudoxus to Einstein
