Because of the presence of free charges, there are currents flowing in a plasma, producing self-consistent magnetic fields. Plasmas can be handled as ionized and magnetized gas or as a magnetized fluid. Plasmas are of fundamental importance for our life. We use plasmas in the displays of laptops or in laser technology. In our group we are concerned with plasma phenomena in the Universe where we find plasmas in extreme conditions.
Stars consist of plasmas.
This also refers of course to the star which is nearest to the Earth, i.e. the Sun. Here we can directly observe the consequences of the solar plasma dynamics, e.g. such huge prominences which can result in extreme powerful eruptions. Solar plasma processes have consequences even in the very near-Earth space environment. This refers to beautiful phenomena like auroral lights. But there may be dangerous consequences like power grid failures, as well.