* Since "Electric current is the rate of charge flow past a given point in an electric circuit", how is the solar wind not part of a circuit? If it weren't part of a circuit, what would cause it to move outward from the Sun and accelerate?
* See http://theory.physics.helsinki.fi/~sol_phys/Sol0609.pdf, which says as follows [my underlining].
9.2 The interplanetary magnetic field
Solar wind carries magnetic field from the Sun to the interplanetary space. This field is called the interplanetary magnetic field (IMF). It is maintained by electric currents in the expanding solar wind. While it obviously affects the local properties of the solar wind, it has also consequences on the solar rotation and on the behavior of plasma environments of solar system bodies.
* Isn't most everything that's visible in the night sky shining by electric power: plasma in glow mode and arc mode? Aren't all the filaments seen throughout the universe the visible portions of Birkeland currents that connect stars within galaxies and connect galaxies within clusters etc?
* When is plasma not part of a circuit?