Recognized by NASA as a giant in heat transfer research, Prof. Simon Ostrach received the inaugural ASME Heat Transfer Division Memorial Award in 1975 and attained membership in the National Academy of Engineering in 1978 for his fundamental discoveries in the field of buoyancy-driven convection. This AMR audio interview paints a remarkable picture of six decades of intellectual leadership and advocacy, including his work as principal investigator on two NASA Spacelab missions in 1992 and 1995 that investigated surface-tension driven convection under microgravity conditions, his commitment to the rigorous integration of research and design, and his, at one time, insatiable appetite for the thrills of weightless flight on the NASA “Vomit Comet.”