I am working off the premise that: If Cosmological expansion is really occurring a redshift (as we currently observe) can only be obtained if (stars, planets, atoms) do not expand. See Misner, Thorne and Wheeler comment: "Only later does he realize that the atom does not expand, the meter stick does not expand, the distance between the sun and earth does not expand. Only distances between clusters of galaxies and greater distances are subject to the expansion. No model more quickly illustrates the actual situation than a rubber balloon with pennies affixed to it, each by a drop of glue. As the balloon is inflated the pennies increase their separation one from another but not a single one of them expands!" [MTW, 1997, p.719]. I am looking for math or physics to justify this belief. Thany you.