To address this part:
Quote:
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Originally Posted by ngeo
However, there is a condition on this power of space. It expands only where it is ‘empty’. Where ‘gravity’ operates - that geometric ‘force’ capable of telling matter how to move - space does not expand. But what is the distinction between intergalactic space and galactic space?
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That's not correct. Space is expanding everywhere. It's only a very small percent per second at any point. This adds up to large amounts over large distances, but very small amounts over, say, the size of a bowling ball. All the other attractive forces between the molecules, atoms, particles in the ball counteract the repulsion caused by expanding space, so equilibrium is reached. Without the expansion of space, that bowling ball would have reached equilibrium at a very slightly smaller size.
Over astronomical distances, the main attractive force is gravity, so the expansion of space may overcome the attractive forces and equilibrium is not reached.
This has actually been discussed in a few other threads here, as well.