ANDREW K. JOHNSTON is a geographer at the National Air and Space Museum, where he researches earth science and environmental change and performs outreach on earth and space science. ROGER D. CONNOR is curator of instruments and avionics at the National Air and Space Museum. CARLENE E. STEPHENS is the curator of timekeeping at the National Museum of American History. PAUL E. CERUZZI is the curator of aerospace electronics and computing at the National Air and Space Museum.
The Smithsonian’s National Air and Space Museum possesses one of the largest collections of aviation and space artifacts in the world. The Smithsonian’s National Museum of American History explores the richness and complexity of the nation’s history. Both museums welcome millions of visitors a year, making them among the most visited museums in the world.
