User Experience (UX) extends the construct of usability by an additional focus on emotion, motivation and aesthetics. An emphasis on aesthetics has been undertaken to a greater extent by design disciplines than by science. The present review examines both design and scientific approaches to aesthetics in order to integrate the two approaches and identify research opportunities that could result in science based design principals. The review of design approaches to aesthetics indicates the primary importance of balance as an element of design. Accordingly, research on the role of balance in producing aesthetic responses from users is a reasonable starting point for a program of research. Additionally, the analysis of aesthetic metrics and individual differences in aesthetic preferences in scientific research are discussed as possible collaboration areas for designers.