Now we all know about the ever expanding Universe confirmed by the Redshift theory, but, I can't figure out the following.

The Unisverse refers to all that is, including the vacuum of space itself.

If the space between matter is a consistant vacuum (which it most likely is) and our feeble atmosphere is in equilibrium with the earths gravity and this vacuum and presumably stable and fixed (for all intents and purposes), and, the Unisverse is expanding outward it is fair to presume the void or vacuum is expaing out with it, if this is so then why does the vacuum not increase in it's intensity and draw the atmosphere from our planet (and others for that matter) while our gravity remains constant? (I for one am glad my question has an answer but I just don't know the answer)

Anyone????