I can't seem to find any data on this, is it a known value?
Possible Duplicate: Why space expansion affects matter? Why does space expansion not expand matter? As we know, the universe is expanding, galaxies are away from each other. But what ...
Possible Duplicate: Why does space expansion not expand matter? Does cosmological expansion have any effects at the atomic level?
REFORMULATED: I have looked at the other questions (ie "why does space expansion affect matter") but can't find the answer I am looking for. My question: There is always mention of space expanding ...