In Part 1 the idea is that antimatter is concentrated in the cosmic voids where we don't see any stars. The thought is that the repulsion of the antimatter is what keeps the visible stars and galaxies out of the voids and causes the accelerated expansion of the universe. My first problem with this is: what is the antimatter? if it is just matter that is made up of antiparticles then I should think that the voids would be full of stars and galaxies, because the antimatter would work the same as regular matter.
I agree, and that's what I've been hearing all along. I don't know enough to speculate reasonably, but space is expanding, and the expanded space is expanding, so there would surely be a steady increase in the recessional velocities. What's happening is exactly what I'd expect to happen: a constant rate of expansion per unit of volume, but an ever increasing volume. So I'm obviously missing some crucial fact.
The usual analogies such as the expanding balloon are misleading. They lead one to imagine a steady, liniar rate of expansion of the balloon's surface. That's not a correct analogy. The fabric of the balloon is expanding, so the amount of fabric expanding is constantly increasing. Result: accelerated mutual recessional velocity of all points on the fabric.
Please tell me, what is it I'm not getting?
