We know there is the Big Bang, "not an explosion" but the accelerated expansion of the Universe - Inflation. I have this interesting model that shows that Universe has began from the singularity, but It'll also going to end at that very singularity. And once it does that The Universe will expand again, the process repeats.
From the singularity, Universe expanded (inflation), and up to a certain limit it'll keep on expanding, then it'll "de-expand", expansion in the reverse order, towards a singularity, which would be the same singularity from where it previously began, making the singularity, infinitely dens. And again, the Universe will expand and de-expand. And this repeats.
However, the "new" Universe that is from right after the de-expansion of the "previous" universe, would not possibly the same as the previous one. It'll give birth to a completely new Universe. The concept of Multiverse arises.
That means, from the one singularity, many Universe(s) are taking place, maybe simultaneously, even right now, because if we think "3 dimensionally", then there is only one Universe, Ours', However, if we think "4 dimensionally (time)" then it's not only us that is existing here in this Universe. Question may arise, okay then Where is the another Universe? It is, however, the wrong question, the right question is "When" is the another Universe?
PS: I have attached a pdf, explaining this approach.
The Explanation of the Multiverse, using this model, could go this way:
Multiverse originated from the very same Singularity.
Let's visualize this, this whole model has a shape inside a circle, now this shape would be rotating on it's singularity (as an axis). However, since, each Universe would needs to be different from one another, so let just give this illustration a height, let us bring this illustration into a 3 dimension, now this shape would be rotating on the singularity, and will also be moving vertically to the singularity, keeping the singularity at the very same location, this would possibly result in different Universe, that would not be colliding one with another (as then they would be the same), they would just be passing right beneath or above one another (depends on the time).
The Singularity would be always in rotating motion, which is responsible for the rotation of the whole Universes and other Universes.
@Preston Guynn
Don't you believe that we have observed CMBR (Cosmic Microwave Background Radiation), we not only know, but observed that this radiation is 13.779 billion years old. We have used WMAP (Wilkinson Microwave Anisotropy Probe) to observe the Big Bang.
You should know that "we" know and we have observed our Universe to get to that "unscientific" claims which are not claims but observations.
Lot to know and Believe I Believe.
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