An introduction to astronomy through a broad survey of what we know about the universe and how we know it.
Ronen Plesser is an associate professor of physics and mathematics at Duke University. His research is in String Theory, the most ambitious attempt yet at a comprehensive theory of the fundamental structure of the universe. His own research centers on the crucial role played in the theory by geometric structures.
More info: http://www.cgtp.duke.edu/~plesser/