What if our nearby galaxies are in an eliptical orbit around something really large like 35 billion light years away? If the trajectories of nearby galaxies are ordered some way, this would explain the seperation of galaxies from the Milky Way to as far as 14-17 billion light years away. As we move farther away from this central thing, the trajectories of these galaxies would cause them to diverge (and seperate from one another). After we pass the apex of the outer end of the orbit, galaxies that are in a similar path to the Milky Way would converge (and come closer together). Once these galaxies approach the massive center of our galactic cloud, the place and time where they would collide violently in each others paths would eventually occur. This would be known as the big crunch where everything in it returns to primordial soup (elementary particles). Once the particles of this primordial soup pass the apex of their inner orbit, their volume would begin to expand violently. This would be the New Big Bang. As distances between orbiting masses increase, the masses' trajectories would differentiate to the point where galaxies like ours today bunch up, form and light up stars!!! It is possible that the recycling of matter happens continously throughout the universe.
here is an updated image of my multiverse theory which gives additional explanation in regards to how light may travel from billions of light years away...
"Speaking of big crunch theory, how can the universe possibly slow down? (Since it is currently speeding up)"
I have very little knowledge of dark matter, it's relationship with gravity, etc. My guess is that the expansion itself will one day deccelerate. The actual velocity of the galaxies (relative to the gargantuan central mass around which our galaxies orbit) would increase as these galaxies converge back into a single point. In an eliptical orbit, orbiting masses accelerate as they approach their inner apex of its orbit and deccelerate as they approach their outer apex.
"How does this theory correlate with the expansion of the Universe we've been witnessing over the years?"
According to the Cyclic Mutliverse Theory
The galaxies and the particles they compose of, in general, are diverging from a single point. Space-time itself, in this theory (as currently defined), does not expand or contract, but rather the galaxies do diverge in such a way that light as we collect it portrays a redshift that leaves us with a conclusion that galaxies that are farther away are moving away from us faster than near-by galaxies. For those with a good pc monitor, I put a slight blue tint and green lines in the image on the first post... the shallow blue tint indicates the path where matter, that makes up our observable universe, will travel - according to the C.M. theory (as it is now), while the green lines demonstrate how light from the earliest places in the universe can appear to surround from all directions, even if they may not be located in such places from us (relative to the gargantuan mass).
As for the gargantuan mass (a very 'hefty', massive thing), its existence is either to be or not to be confirmed. Because of the mass of such an object... we cannot detect such a thing through means that our current scientific knowledge can devise. For now, it is best to come up with theories that scientists today can augment (or admend) to today's commonly accepted scientific theory of the big bang - even better for those new theories that can be tested with data that is obtained with our scientific instruments.
Another question such as, "What may lie beyond this hypothesized Gargantuan Central Mass and the galaxies revolving around it?" demands that the Cyclical Multiverse Theory to have some level of supporting evidence to back it up.
"So where is the repeatable, independently verifiable, evidence for your revolutionary view point?"
For such evidence we must look for evidence that supports the Big Bang Theory.
In the Cyclic Multiverse Theory (which does not involve concepts such as Dark Matter), our galaxy is one of a cluster of galaxies that is rotating around a large central mass that we cannot detect with waves which we have yet to detect using scientific instruments.
So, in order for a sort of Cyclic Multiverse Theory to gain a foundation in science, it has to be able to explain much of the data that our reliable scientific instruments detect.
Things that would help the cause of supporting the Cyclic Multiverse Theory... (i think...)
- detecting lateral movement of galaxies which are billions of light-years away - with great certainty.
- the discovery of new waves that suggest that the big bang is really a continous expansion of matter from a small superdense mass (reffered to as the singularity) that is formed by a continuous compression of mass from the other side.
- the discovery of a large superdense mass around which matter violently contracts and expands during a sort of complex orbit.