Originally Posted By: Bill S.
there is no reference point, outside space, relative to which an object can be stationary, or in motion.

A reference point relative to which a galaxy can be stationary or in motion is an adjacent galaxy.

Originally Posted By: Bill S.
If an object is in space, and space moves, the object must move with it in order to remain in the same place.

Space does not move!

Originally Posted By: Bill S.
It isn’t a question of space needing to be tangible in order to move the object; the object does not move, it remains in the same place in space.

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.

According to Newton's first law of motion - force is required to make an object move and on the basis that 'space' is a total absence of matter it has no physical effect on any object no matter how much it stretches; ten times nothing is still nothing.

In accordance with the expanding universe concept - most of the galaxies are moving away from us and from each other and for any object to be made to move it must be subjected to some form of force however 'expanding space' is not 'a force'.

Originally Posted By: Bill S.
The fact that one part of space has moved relative to another is irrelevant, the object is still in the same place.

I, for one, am not talking about one part of space moving relative to another but am referring to other galaxies moving relative to each other.

The fact that 'the object' (a galaxy) may still be in the same place regardless of the 'stretching' of space is not the critical factor which is the then resultant location of other galaxies.

We could perhaps insist that whilst all the other galaxies are moving ours remains in the same place however this contradicts the observed CMBR frequency shifts.