CubeSat for Solar Particles (CuSP) is a planned nanosatellite spacecraft that will study the dynamic particles and magnetic fields that stream from the Sun. CuSP is a low-cost 6U CubeSat nanosatellite that once deployed, will orbit the Sun, measuring incoming radiation that can create a wide variety of effects at Earth, from interfering with radio communications to tripping up satellite electronics to creating electric currents in power grids. The principal investigator for CuSP is Mihir Desai, at the Southwest Research Institute in San Antonio, Texas. It will fly as a secondary payload mission on the first flight of the Space Launch System, Exploration Mission 1 (EM-1) scheduled to launch in 2018.