Magnetospheric physics is a subfield of space physics dedicated to the study of planetary magnetospheres, which are regions of space dominated by a planet's intrinsic magnetic field. This field investigates the complex interactions between these magnetospheres and the external plasma environment, primarily the solar wind, examining phenomena such as particle dynamics, plasma waves, electric currents, and the generation of auroras, which is essential for understanding space weather and the protection of planetary atmospheres and technologies.