To listen to this event, please visit Planetary Radio. Planetary Radio Live returned to the Crawford Family Forum with another exciting show about space exploration. Bill Nye the Science Guy joined host Mat Kaplan for an exciting conversation about two robotic emissaries of humanity on the Red Planet. The Planetary Society’s series welcomed John Callas, longtime manager of the Mars Exploration Rover program. Rover Opportunity is still trekking across Mars nearly eight years after its arrival. Representing a brand new mission was Joy Crisp, Deputy Project Scientist for the SUV-sized “Curiosity,” also known as the Mars Science Laboratory. Fans of the final frontier were entertained by an appropriately spacey duo, local jazz vocalist KJ Williams and guitarist Laurence Yeung. KJ is also a roboticist with a Caltech PhD. Photo Credit: AFP