A More Perfect Heaven: How Copernicus Revolutionized the Cosmos

The fact that the earth revolves around the sun may seem like common sense to us, but in the early sixteenth century, it was nothing short of ridiculous. Today's guest on Focus, writer Dava Sobel, explores the publication of Copernicus' heliocentric theory and the revolution of truly astronomical size that it would launch.

Guest: Dava Sobel (author of A More Perfect Heaven: How Copernicus Revolutionized the Cosmos).