Howard McCurdy, professor, School of Public Affairs, American University, Washington, D.C., visiting professor, Evans School of Public Affairs, University of Washington, Seattle, Wash.
Bill Adkins, president, Adkins Strategies, LLC, former staff director, House Space and Aeronautics Sub-Committee, Washington, D.C.
Elon Musk, CEO and CTO, Space Exploration Technologies Corp. (SpaceX), Hawthorne, Calif.
Addressing the Kennedy Space Center Thursday, President Obama laid out his plan for the space program. He expects NASA to put astronauts in Mars orbit by the mid-2030s, but is counting on private companies to run trips closer to home. Ira Flatow and guests discuss NASA's future.