What is true space?

How galaxy is floating in the space?
How this massive galaxy is floating in the space?
Now  we know ,Truly galaxy is not massive its only magnetic because it is made up of atomic magnetic forces, but  not only galaxy have magnetic force even empty space have very power full magnetic force then galaxy, but this galaxy magnetic force and space magnetic force are couples, they are opposite each other in polarity. Let us call galaxy magnetic force as negatively charged atomic magnetic force and let us call space magnetic force as positively charged atomic magnetic force.

So powerful negatively charged space magnetic force (galaxy) was placed under equator region of positively charged empty space magnetic force (empty space)