Electrojet Zeeman Imaging Explorer (EZIE) is a planned NASA heliophysics mission, that will study the Sun and space weather near Earth. It will consist of three CubeSats that will study the auroral electrojets, "by exploring a phenomenon called Zeeman splitting, which is the splitting of a molecule’s light spectrum when placed near a magnetic field".[1] EZIE is expected to be launched in 2025.[2]
Further reading
Padmanabhan, Sharmila; Misra, Sidharth; Kangaslahti, Pekka; Montes, Oliver; Bosch-Luis, Javier; Cofield, Rick; Ramos, Isaac; Yee, Sam (17 July 2022). Microwave Electrojet Magnetogram (MEM) Instrument for the Electrojet Zeeman Imaging Explorer (EZIE) Mission. IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium. pp. 7337–7340. doi:10.1109/IGARSS46834.2022.9884004.