CubeSat for Solar Particles
CubeSat for Solar Particles (CuSP) was a low-cost 6U CubeSat to orbit the Sun to study the dynamic particles and magnetic fields. The principal investigator for CuSP is Mihir Desai, at the Southwest Research Institute (SwRI) in San Antonio, Texas.
Source: Wikipedia — CubeSat for Solar Particles (CC BY-SA 4.0)