Marko,
I will refer you to my TOE: part IV.
In a nutshell, and incidentally I have expanded the following hypothesis in other posts elsewhere on this site, the expanding Universe is in perpetual motion. That is, we can draw inferrence from the generally accepted facts that a) it had a beginning, and b) it is expanding and that this expansion is accelerating therefore we conclude c) that it is a process which is in perpetual motion:
a +
b ->
c. This can also be analyzed from the point of view that a perpetual motion process which had a beginning must necessarily be an accelerating one. Derivation of the premise
c above, then, is a simple exercise in logic.
Having said that, we turn to my TOE: part IV, which examines the event at that moment when the acceleration attains light speed. Then, infinite mass is encountered in a place where time stands still. What we are left with is a "black crust" with which all the matter in this cycle of the creation will eventually collide, leaving a spatial void. That is the end of this cycle of the Universe. On the other side of that crust is a new creation process, the next cycle, with a beginning where energy, mass and time is newly created from a still point of reference and which is pretty much a repeat of this cycle and the one before it, and so on, to the beginning as I have described it in the post that you have read. So you can see that the periphery of the Universe is a creation front, which continues to expand and create and which accelerates as it expands and which has the property of a wave, where the end of every cycle is represented by a black crust of infinited density and where time stands still, only to propagate for perpetuity.
The wave is analogous to any other, for example that produced by a tuning fork. Just let your imagination superimpose the "black crusts" of our infinite mass where time stands still over the dark bands in the demonstration, the only difference being that only the wave front is advancing and the blank bands would be static spheres, since the initial event that started it all was the emission of a single front. Also, since matter and energy represents the hysteresis of the trailing portion of the cycle and since all matter eventually collides with a crust most of the cycles in between these crusts should be devoid of anything but space, except for those near the leading front.