“Ok, so what does hold galaxies together? Why do the spiral arms rotate around the center? Why dont they just fly apart? Why do they look just like a hurricane?
Must be some kind of force not yet determined or explained that I know of.”
Electromagnetizm. Nothing fancier than that is needed. It's as clear as day in some cases:
A good example is the spiral galaxy shown above. The arms, particularly the upper arm, show material being held in a straight line until some point at which the field breaks down, after which material very quickly trails away and dissipates. Gravity and inertia cannot do things like that.
The evolutionist will find a way to work it into his answer to you that there is no god, whether they do it subtly or overtly.
I could go on but that would be thread hi-jack.