NMS (Magnetospheric Multiscale Mission) is space mission by NASA to study Earth's magnetosphere. It uses four identical spacecraft, which are flying in a tetrahedral formation. Each has a launch mass of 1360 kg. MMS was built to collect information about processes in many astrophysical plasmas (magnetic reconnection, turbulence, microphysis and energetic particle acceleration). Every spacecraf carries a fewexperiments, which are divided into three suites (the Hot Plasma Suite, the Energetic Particles Detector Suite, and the Fields Suite). NMS was launched on 13 March 2015 at 02:44 UTC. After it was deployed in orbit, a total of eight axial and wire booms were deployed and increased size from 29 to 112 m.
In 2005 the mission was supported by NASA. Goddard Space Flight Center in Maryland was leading system engineering, spacecraft bus design, integration and at the end testing. Project was improved with experience from different projects (Cassini mission, Cluster, IMAGE). MMS had permission in June 2009 to proceed to Phase C, and in September 2010 passed its Critical Design Review.