ABSTRACT
The MHD configurations and flow phenomena we have studied so far assume that space plasma systems are in stable equilibrium. Since all physical parameters describing stable systems are not time-dependent, the models were formulated for steady-state conditions. These models are only valid in the average sense and under very quiet solar wind conditions. However, evidence shows that plasma systems in space are often unstable. For example, solar flares and auroras represent unstable space plasma phenomena.
