Planet (Plasma)

The aptly-named "plasma planets" have captured the imagination of countless artists and inspired innumerable works, yet the physics behind them are surprisingly mundane by cosmological standards. A rocky terrestrial with the right kind of atmosphere and magnetic field will, when bombarded with solar radiation, generate sprawling plasma storms as specific atmospheric elements are stripped of their electrons. Over time these storms will generally scorch the surface rock black, adding to the visual impact.