Big History is an interdisciplinary course—in other words, it looks at the history of the Universe and universal change from a number of very distinctive perspectives. Each perspective represents one or more areas of study (we call these disciplines), and each area of study strives to answer a completely different set of questions about ourselves, our planet, and the Universe. No one discipline can know all there is to know about absolutely everything. It would be impossible to think of all the questions to ask, let alone have all the answers. Usually, if we look at any single object or event from the points of view of multiple areas of expertise, we can put together a rich understanding that goes far beyond a one-discipline approach.