Revolutions

As a university professor Southern Man is occasionally presented with gifts from students - often candy or trinkets from a student's home country, but sometimes books. As a result he has quite a collection of Korans. Today one of his astronomy students surprised him with this:


On the Revolutions of Heavenly Spheres by Copernicus, with an introduction by Stephen Hawking. By coincidence, Southern Man had just assigned a student an extra-credit project to make him a couple of large posters illustrating the Ptolemic and Copernican systems with accurate depictions of the epicycles and epicenters and deferents and such. A thoughful gift and one that is much appreciated.