Dr. Alan Stern, the Executive Director of the Southwest Research Institute Space Science and Engineering Division in Boulder, CO was the guest for the first hour of this program. Dr. Stern began the discussion by talking about Pluto, the importance of dwarf planets and the science involved in discovering and understanding these planetary bodies. This led to a detailed discussion of the recent International Astronomical Union's (IAU) decision to change the definition of planets to exclude Pluto and other dwarf planets in our solar system and elsewhere. Dr.