Originally Posted By: Bill6
A reference point relative to which a galaxy can be stationary or in motion is an adjacent galaxy.


Since the "adjacent galaxy" is also in space, my point still stands.

Originally Posted By: Bill6
Space does not move!


There are well accepted theories that would not agree with this.

If space is expanding (BB), every part of space is moving relative to every other part.
If space can be distorted (GR), parts of space move relative to other parts.

Originally Posted By: Bill6
A specific galaxy may be said to retain its location but according to the expanding universe concept all (most of) the other galaxies are moving away from it.


If a specific galaxy may be said to retain its location, every galaxy may be said to retain its location in space. If space is expanding, every galaxy must move away from every other in order to remain in the same location in space.

There never was nothing.