John Krige is Kranzberg Professor in the School of History, Technology and Society at the Georgia Institute of Technology, USA, and the author of American Hegemony and the Postwar Reconstruction of Science in Europe (2006). An acknowledged expert on the history of the space program, he has appeared in recent years on American Public Radio, the BBC, and Swiss Radio.Angelina Long Callahan is Associate Historian at the Naval Research Laboratory in Washington, DC, USA, where she wrote her dissertation on meteorological satellites and the Cold War. She has a PhD from the Georgia Institute of Technology's School of History, Technology, and Society. Her other research pursuits include the history of 1920-30s drone research and development and technological roots of the Vanguard satellite project.Ashok Maharaj has a PhD from the Georgia Institute of Technology's School of History, Technology, and Society, USA. He lives and works in Chennai, India.