Guest: Dr. Dave Goldberg. Topics, physics, astronomy, astrophysics we can all understand and enjoy. Dr. Dave Goldberg, physics professor at Drexel University was our guest to discuss his new book, "A User's Guide to the Universe: Surviving the Perils of Black Holes, Time Paradoxes, and Quantum Uncertainty." Visit his blog website for more information, http://usersguidetotheuniverse.com.