Originally Posted by Nereid

Thanks tusenfem.

I get easily confused about plasmas behaving cosmologically (or universally), and wasn't sure whether the magnetic field lines would be frozen-in, or whether Birkeland double layers of fractal dimension 2.2 would form, or whether (Punnet?) Z-pinches would begin to explode but would be stopped by magnetic reconnection in the Weibel instabilities that would start to grow out of the plasma jets responsible for the EDM on comet surfaces. Perhaps it's as well, then, that I didn't have salad for lunch today (though I did buy a nice chunk of Gloucester double in the cheese shop) ...