How the Edge of Our Galaxy Defies Known Physics

So some people might be familiar with the name of Hannes Alfven. He was both an electrical engineer, and an astrophysicist. He applied what he knew of the laws of electrodynamics as laid out by Maxwell, Ampere, and Faraday to what he saw in the cosmos in what are still considered to be 'unconventional' ways, one of which was to interpret the rotation of spiral galaxies according to everyday electrodynamic principles. They even named some plasma phenomenon after him (Alfven waves), and he also was awarded a Nobel Prize in Physics for his work on magnetohydrodynamics, although he later went on to revise his understanding of electrodynamics to essentially revoke his earlier postulates on MHD.
Anyway, Alfven noted that the rotation of spiral galaxies behaved like a Faraday disk, or a homopolar motor. Essentially, if you pump an electric current through a plasma,  it will rotate due to the Lorentz Force. Since the galaxy is a big pool of plasma, it whirls due to the Lorentz Force but cannot escape because of the concurrent magnetic field created by the initiating electric current. This would also explain the 'how' of spiral galaxies, as well as the 'why'.
An interesting sidenote to the above is that there is an almost equal amount of visible plasma as there is hypothesized 'dark matter/energy/etc'. Simply by considering basic nuclear chemistry and the behavior of dipolar atoms in electromagnetic fields, one is able to explain: the observations of the matter at the edge of galaxies and why they do not slingshot away into the void; the bipolar geometry of stellar systems/galaxies/galactic clusters/etc; the axial alignment of visible galaxies; magnetic fields at all scales of observation in the cosmos; high frequency emissions of cosmic objects of all scales. The list really does go on and on...

The list really does go on an on and on. Just as Hannes Alfven, who is known as the Father of Plasma Cosmology, applied his knowledge of electrodynamics and the behaviors of plasma to astrophysics, I would encourage anyone interested in astronomy and astrophysics to consider taking a course in either Nuclear Chemistry or even just Basic Electricity. It really and truly makes SO much more sense of modern observations of the cosmos than the old Standard Theory does.

Peace :)