I've been wondering about that, too...
Consider the rings of Saturn. Notice how they are controlled by the magnetic forces in the planet? They literally corkscrew through magnetic lines
of flux. I suppose this is the theory.
Consider the galaxy. It maintains its alignment in a plane. There must be a force at work to do that. The suggestion seems to be that when you
cross over from the N pole to the S pole in the galactic magnetic lines of flux, there will be an effect on the objects passing through.
Who knows.

