That's the funny thing about the electrical force, it both attracts and repels, depending merely on the direction of the current and the angles between their centers. But being limited by gravity, all you have is an attractive force to work with, so you invented expanding nothing to explain repulsion. Black holes to explain million year light long plasma jets accelerating from the centers of galaxies. Black holes that sucked everything in until technology advanced and discovered these plasma jets. Then it morphed into something that then repelled too. Funny how that works.
MIT Physics Demo -- Forces on a Current-Carrying Wire | MIT Video
Being that the Birkeland Currents entering the polar regions carrying 100,000 amps are going both directions, one can begin to understand why the Earth neither plunges into the Sun, nor fly's away. It is being both attracted and repelled all at the same time.
One day you will realize it only depends on the current streams between galaxies, and the direction of the particles to other particles and angles between their centers. Galaxies that look like they are coming apart, are. Galaxies that look like they are colliding, are. All because you confuse what redshift really is do you have any expansion beyond normal.
Lets face it, 13 billion years ago those galaxies were at the distance apart that we see them at today. We are seeing the light from these distant galaxies from 13 billion years ago, and they are not close together, originating in a big bang. You can't move the galaxy to a beginning point. what you see is from 13 billion years ago, you see them exactly as they were 13 billions years ago, disproving your big bang time scale.
Get a grip on reality.