MIT alumni astronauts discuss spaceflight experiences that range from Gemini to Apollo through the Space Shuttle and the International Space Station missions.  Moderators * Jeffrey A. Hoffman, Professor of the Practice of Aerospace Engineering, Department of Aeronautics and Astronautics, MIT; STS-51-D, STS-35, STS-46, STS-61, STS-75 * Laurence R. Young '57 SM '59 ScD '62, Apollo Program Professor of Aeronautics and Astronautics; Professor of Health Sciences and Technology, MIT; STS-58 (alternate) Panelists * Buzz Aldrin ScD '63 - Gemini 12, Apollo 11 * Timothy J. (TJ) Creamer SM '92, Soyuz TMA-17, Expedition 22/23 * Terry J. Hart SM '69 - STS 41-C * Frederick H. (Rick) Hauck SM '66 - STS-7, STS-51-A, STS-26 * Byron Lichtenberg SM '75, ScD '79 - STS-9, STS-45 * Michael J. Massimino SM '88, ENG '90, ME '90, PhD '92 - STS-109, STS-125