well, it's well explained ideology, I presume. although it has a detailed explanation, the thing that you need is data. I know this theory is robust, but to make it really robust, and make all-time accurate description about reality, you can call it theory. But still, I like the idea of it. In our part, we don't call like that though. We just say that there is a timelessness border between each and every galaxy. And it is covered by 2 unknown material, dark matter and dark energy (and yes, they exist in real). Just the mere difference of the each concentration in the dark forces will result in the chaos state in the universe. And that itself, is what is keeping them away from each other. Well, it's my hypothesis.