At the edge of the universe there isn’t any cataclysmic activity.
That should surprise you, one must imagine that the edge of the universe reaches a cataclysmic turmoil where its limitations and its edge and where something else other than the universe begins, be it another universe, the nothingness or something as repulsive as hamburger with eggs. And yet, at the edge of the universe things are rather cosmologically quiet. This is not to say that there isn’t some grand cosmological reaction in relationship to the size of your average headache but in relationship to the chaotic it is, overall a quiet border crossing.
The edge of the universe is monolithic, its perimeter, currently unknown to us, is well monolithic, but it does not cause havoc with the surrounding edges of everything else that it touches, for certainly a universe with a perimeter as large as ours must certainly touch many more things, other universes, the nothingness and things we have not thought about, but our universe relates well to those other entities, and mildly looses energy to them or absorbs some of their energy, or refuses to react and interact, but at the edge of the universe the congruence fits like a gigzag puzzle that has pieces that are missing and so the choreographed event is a eternal missing piece scenario, where we are constantly trying to fit or invade into the other things, entities that are arresting our advances and contrived desire for uniformity.
In brief the cataclysm is defined by us, a supernova or a black whole, in their definitive stages must reconcile themselves to the boring of their existence. Once you have seen a supernova you have practically seen them all. There is nothing gigantic or phenomenal about all this, we are certainly at the roots of the expressed phenomena, even as we are detached from its effects. The implications of these are exotic, there are no exotic events within the confines of the universe, at least none that we can observe in patterns. The exotic cause is substantially less accessible. If the edge of the universe is as large around or jaggedly linear as we suspect, it is common, and the endearing comment here, is that there might not be anything fundamentally unique within the confines of the universe save for our ability to be impressed by it.
It is after you cease to be impressed that you get to the bottom of the infinite.