- Duncan used data obtained in his undergraduate thesis at Caltech, combined with recent interferometry by Univ. of Michigan researchers, to analyze an unusual binary star system in which both components are pulsating variables. Duncan's main research focuses on the effectiveness of different ways of teaching science, particularly how technology improves or in some cases reduces student learning. His role as Fiske Planetarium Director entails a large service commitment; research is secondary. Duncan's research is directly applicable to universities, science museums, and planetariums. He often presents it in regular talks (colloquia) but also in workshops and in an advisory capacity. He continues researching ways to make planetarium teaching more active, giving students a challenge where they must figure out where on earth they are. Data from this is under analysis. Duncan has been invited to talk about the research at the International Planetarium conference in 2018.