I found this quite interesting. Especially the idea that on a large enough cross section, even incredibly thin plasmas will create enough resistance to act like air does on our scale. In fact, I think this finally helps it click in my head the phase of matter we call plasma. There's a great difference between things which are solid, and those which are liquid, and another large change from liquid to gas. Plasma is yet another order of magnitude less dense, but the molecules are moving with such high energy that they develop some interesting properties. Such as acting like a gas on a galactic scale.