Is our Universe just one of many in an infinite, ever-expanding multiverse? What exactly is the multiverse? Is it just a speculation of us humans or could it be that our universe is a part of a multiverse? In this article we will discuss these questions.
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We have used the theory of multiple universes in cosmology, physics, philosophy, astronomy, religion, science fiction, comic books and fantasy. But we will look at the scientific aspect of it. We will only focus on the evidences and facts and observations made by astronomers and then draw a conclusion on the topic.
The three dimensional world which we witness in our daily lives may just be an illusion where there is no distinction between past, present and future. But how is it possible? How can we be so wrong about something so familiar? These questions bother almost all astronomers and physicist. It’s a groundbreaking possibility that opens up a whole different world for us. We will discuss an important Question. What if alternative Universes are being formed all the time? The Big Bang might not be a unique event. We might live In a duplicate parallel reality among the many other parallel realities. Somewhere there’s a duplicate of you, me and everyone else. Are we in a Universe or a Multiverse?
Uniqueness is an idea so usual that no one questions it. A recent picture of the cosmos is coming to light, where nothing is unique. This recent picture challenges the notion of Uniqueness, in which duplicates of things are unavoidable. There might be duplicates, not only of objects but of me, you and everyone else. And if it’s right, where are they? Why haven’t we seen them? There was a time when the word Universe meant everything that existed, the notion of more than one universe seemed impossible. But if we go beyond our Milky Way and even beyond the distant galaxies and beyond the end of the observable Universe, we might find that our Universe is not alone. There might be other Universes, in-fact, there might be new universes being born all the time might have stars and even a planet that looks familiar. We may be live in an expanding sea of Multiverse! Some of these might not have the basic requirements for the formation of matter. Others might have planets, stars and Galaxies that look familiar to us but with a slight difference. And if there are many other Universes out there, some might be even identical to ours except for the slightest Details. For Example, in any other parallel reality, it might be possible I am the Prime Minister of India. And if the multiverse exists, we will have to encounter a lot of possibilities that might exist. There could be other places where duplicates of me would exist and would think, act and speak in the same way as I do, but with some slight differences.
Is it science, is it religion, is it Philosophy? As a Physicist we should not and we don’t ask these questions. We follow the logic, and the logic leads there. There was a time when people thought Earth was at the centre of the Cosmos and everything else that exists revolved around us. Then scientists like Galileo and Copernicus showed us it’s the sun that’s at the centre of our solar system. And our solar system is just a little neighbourhood in our Gigantic Galaxy. And our galaxy, it’s among the billions of galaxies that make up our universe. These ideas sounded shocking and outrageous when they were first suggested, but now we don’t even think to question these ideas. The idea of different alternate universes or the multiverse might be the same. It just requires a radical change in our perspective of the cosmos.
So let’s talk about where did the idea of Multiverse came from? What are the evidences of its existence? Well, a lot of astonishing discoveries and theories have suggested we may be a part of the multiverse. The very first among them is the Big Bang, the theory of the origin of our universe. According to this theory, our Universe began 13.8 billion years ago in a very hot and dense, violen* explosio* of a very tiny primordial nugget. Over millions and millions of years the universe cooled down and it lead to the formation of Stars, galaxies and planets. The universe is still expanding because of that explosio*. But there’s one major piece of this theory that’s missing. The Big Bang tells nothing about what caused the explosio*, throwing everything outwards. What caused the BANG? So, what furled the violen* explosio*? What force could set everything moving outwards?
In 1979, a young physicist Alan Guth laid the foundation of the idea of the multiverse.
Written By Prayag Pandey