SSC is part of an industrial team in developing the PROBA-3 satellite system. PROBA-3 is the ESA formation flying demonstration mission preparing for future formation flying missions, such as Xeus and Darwin. The PROBA-3 mission will demonstrate algorithms, sensors, propulsion systems and other technologies needed for formation flying, and is a logical next step after the SSC PRISMA mission to advance the European capability in the formation flying technologies.