Earth Science centers on the many complex and dynamic processes at work in and around the Earth’s surface, operating at time scales ranging from a few hours to millennia. Some of these processes are natural, while others are man-made; many have important environmental and societal consequences. Examples include the constantly evolving nature of ocean currents, the impact of melting glaciers on global sea level, the response of the atmosphere to increased levels of greenhouse gases, and the detection/prediction of natural hazards such as volcanoes and earthquakes. To better understand these processes, scientists rely on detailed measurements, including those made from space. These instruments and platforms must operate precisely in the harsh environment of space. To develop new and innovative measurement concepts, interaction among scientists and engineers is critical. The Earth Science group of C-STAR combines expertise in the interpretation and processing of Earth science data with the development of next generation instrument systems.