This international SMS team brings together expertise in building the individual sensors of the SMS instrument, electronic equipment, data analysis and mission operations and theory, all on the WIND laboratory, which is half of the Global Geospace Science GGS mission, just one component of the International Solar Terrestrial Physics science initiative ( ISTP) which is coordinated at the Science Planning and Operations Facility SPOF. The work is supported in part by NASA, USA, by the Swiss National Science Foundation, and ESA.