Wave phenomena in space generally combine both electric and magnetic fields. Electric fields energize and accelerate ions and electrons. Magnetic fields steer the electrons.
David Sterns writes in "Birth of a Radiation Belt" "We have abundant evidence that ions and electrons in space are indeed accelerated to high energies, all over the universe, in flares and CMEs near the sun, in elusive "substorms" of the magnetosphere, in the radiation belts of Jupiter and other magnetized planets, and from unknown sources of cosmic rays that bombard earth."
A shock wave was recorded on earth on 1991 by magnetic observatories through its associated magnetic pulse. The shock wave was accompanied by a strong electric field, a voltage spike.
Cosmic rays reveal electricity flows in OB star associations throughout the Universe by massive young supernovas accelerating positive and negative charges as electric current.
David Stern on plasma physics cosmology
A galaxy is largely a collective supernova electromagnetic phenomena - Jets accelerate charged particles by electric fields, and star formation is ruled and shaped by magnetic fields. The outdated belief is that a galaxy is a gravitational bound system of stars requiring dark matter to maintain it's thin flat shape. The galaxy rotation curve paradigm for the big-bang requires inventing many different kinds of theoretical dark matter. The most accepted model is cold dark matter near absolute zero, which might be laboratory undetectable liquid helium and solid hydrogen. These two atoms comprise over 99.5% of the universe's atoms, but foolishly only as gaseous states, notably inside densely packed cold molecular clouds where protostellar cores are seen to condense in a galaxy. Supernova core remnants are never found no matter how hard they search, only an imagined existence behind dust and gas. Everything learned in science and objective reality comes from studying electromagnetic phenomena.