Multiverse is inevitable and we are living in it!
The Universe we observe, from one end to another; it is just a single drop in a vast, never-ending cosmic ocean.
Imagine, beyond what we can see, there is more space, more stars, galaxies, blackholes, planets, solar systems, and a lot more of everything else. And all of it continuing for zillions of lights years beyond what we will ever be able to access.
Imagine that there is not one but zillions of Universes just like ours, spread across countless number of light years; some larger and older; some smaller and younger dotted throughout an even larger space-time. Imagine!
As rapidly and inevitably these Universes expand, the Space-Time containing them expands even more quickly, driving the apart from one another and ensuring that no two Universe will ever meet. making sure, you will never get to see your doppleganger from a parallel Universe.
All of this is a crazy fiction and a real dream I so much want to prove to be true.
If the science we accept today is correct, if all our theories and equations hold, it’s not only a valid idea, it’s an unavoidable consequence of our fundamental laws.
Idea of Multiverse has its roots in the Physics required to describe the Universe that we see and inhabit today.