Scientific FantasyParallel Universes: Are We Living in a Multiverse?

Parallel Universes: Are We Living in a Multiverse?


Ever wondered what must be on the other side of the world? What stories must be living engraved on the walls of the perfect universe, the most immaculate and a universe of endless possibilities to exist? A universe where stories come true, and you live the life you desire, all the fake scenarios in your head, the passion, the wishes, the things that dreams are made of.

We love the idea of an alternate reality, a place where things turn out differently, where you get into Hogwarts and plug in your USB on the first try, or where you could put the star in Star Wars. A perfect world where you could marry your crush; sounds like a parallel universe thing. Well, for the most part, yes.

We humans have always created scenarios in our heads, and it takes an instant for us to shrug it off our shoulders, saying, “That is not happening.”

Now, will you be able to wrap your heads around the fact if I say that the parallel universe does exist for real and the chances of you flying like a bird is more likely to happen there than in a real-world scenario? You read that right.

Our reality is not the only one. There are many other universes out there that exist simultaneously alongside ours. Some physicists believe that these alternate realities exist in different dimensions. This idea has been around since ancient times, but it was popularized again in the 19th century due to the work of German mathematician David Hilbert. He suggested that any mathematical model can be used to describe any possible physical system.

Photo by: NASA/Unsplash

The concept of a parallel universe is one of the many adaptations in the fiction world, but you will be shocked to know this is not limited to only science fiction movie settings. There are some fundamental scientific theories supporting and promoting the idea of a parallel universe beyond our universe.

However, the existence of a multiverse is still highly doubtful and one of the most controversial theories of all scientific history. We shall discuss it later in the article, but for now, to understand this in-depth and have our brains do the rest of the math, let’s dive straight into it. Shall we?

What is a Parallel Universe?

A parallel universe, conjointly referred to as a parallel dimension, alternate universe, or alternate reality, could be described as a theoretical concept, a speculative self-contained plane of existence co-existing with one’s own. The addition of all possible parallel universes representing reality is usually a Multiverse.

A term used to describe the universe that exists beyond our own. In other words, it is everything else that exists out there. It includes planets, stars, galaxies, black holes, dark matter, etc.

There are many theories about what exactly lies outside of our universe. Some believe that it could be a multiverse with multiple universes existing side-by-side. Others think that it may be a single universe but with different dimensions.

What we do know for sure is that our universe has its limits. Anything that lies beyond this boundary is invisible to us. We can only observe things that lie within our observable universe. Though this does not make it any less attractive, instead, to the contrary, it ignites more curiosity in the minds of a cosmos freak, including your nerdy friend who carries ‘The Theory of Everything’ around with them.

The Parallel Universe Theory

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Even though we cannot see anything past the edge of our universe, scientists have theorized that there is something. They call it “dark energy.” Dark energy is a mysterious force that drives the universe’s expansion.

In 1954, Princeton University scholar Hugh Everett III designed that parallel universes co-exist and diverge from our universe. Came to be better known as Everett’s Many-Worlds Theory was his endeavor to reply to some nonreciprocal inquiries raised within the developing field of quantum material science. In 2012, two quantum physicists, Dr. S. Haroche and Dr. D. Worland received an award for an experiment that proved- that a particle is at two locations simultaneously.

Is it a real possibility for a particle to be present in two places at once? If yes, is it possible for humans to be at two places simultaneously too? Maybe, ‘in a parallel universe.’

Our universe is unimaginably huge. Many billions, if not trillions, of galaxies, are spinning through space, containing billions or trillions of stars. Some researchers learning models of the universe speculate that the universe’s diameter can be 7 billion light-years across. Others assume it can be infinite.

But is it all that is out there? Scientific fantasy loves the thought of a parallel universe, and therefore the thought that we would be living only one infinite range of attainable lives is crazy itself. The basic theory explores and, in some cases, supports the existence of universes outside, parallel to, or distant from, however mirroring our own. Multiverses are not reserved for “Star Trek,” “Spiderman,” and “Doctor Strange.”

Quantum Mechanics and Parallel Universes

Some researchers base their ideas of parallel universes on quantum physics, the mathematical description of subatomic particles. In quantum physics, multiple states of existence for small particle units are all doable simultaneously; a wave function encapsulates all of these potentialities. However, once we truly look, we manage to solely ever observe one among all the changes that might exist.

When this happens, they become connected and cannot be separated until one of them is measured. In quantum mechanics, this effect is described by the wave function. According to the theory of special relativity, nothing can travel faster than light.

However, in 1964 American physicist John Stewart Bell proved that this is not necessarily true. If we consider the results of experiments performed by Alain Aspect, who showed that measurements could be made even if space-like separation existed between the objects involved.

Another unrealistic theory roots in the existence of a multiverse. Our universe is ever-expanding, and it unlocks a crazy possibility with ever-expanding notions.

Multiverse Cosmology

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Multiverse is a term used to describe the idea that our universe is just one of many universes. Physicist Hugh Everett III first proposed this theory in 1957. He suggested that each time a particle decays into two particles, they exist together until detected. In other words, if we were able to detect the decay of a single electron, then the electron would have existed in two places at once.

A multiverse is a theoretic assortment of doubtless multiple evident universes, every of which might comprise everything that is through an experiment accessible by a connected community of observers. The acknowledged universe accessible to telescopes is regarding 90 billion light-years across.

The multiverse plan has arisen in several versions, primarily cosmology, quantum physics, and philosophy. It sometimes asserts the separate physical existence of various potential configurations or histories of the acknowledged evident universe. However, this universe would represent simply a tiny or microscopic set of the multiverse.

The term multiverse was coined by American thinker William James in 1895 to check with the confusing ethical means of natural phenomena and to not alternative attainable universes.

Types of Multiverses

The multiverse, just like any other scientific concept, similarly has its sub-branches which makes it a little easier to understand the temporary structure it falls into.

As several scientists are engaged in the multiverse idea, they need to return with some varieties. Here area unit some details associated with it. Generally, it depends on the degree to which it may frame the existence of a particular universe regarding one scientifically.

1. The Common Origin Model

Within the case of the standard origin model, multiple universes have one origin. Moreover, they are thought to be interacting with one another.

2. The Disconnected Model

The disconnected model of the multiverse is planned by some scientists that show that parallel universes have freelance origins. However, they co-exist simply with parallel reality. This hypothesis stands with the support of the modal realism theory.

3. The Quantum Gravity Model

It is yet one more approach to proving the existence of a multiverse that is more connected to at least one another. This approach solely stands on Einstein’s general theory of relativity and verses of quantum physics.

The most well-developed model of a multiverse of proliferating space-times relies on the thought of cosmological inflation. Inflation could be a theoretical method of the first universe during which the space-time continuum would have expanded exponentially quicker than at present.

Cosmic inflation is the theory that suggests that our universe was once smaller than a grain of sand. As time went on, the universe expanded exponentially until it became more extensive than the size of a proton. At this point, the universe began to slow down and eventually stop expanding. After this, the universe started to contract again.

While giving a base to the multiverse thought, this approach shows that a giant bang that ends up in creating the universe will be the rationale for its growth. These expansions will lead a tiny universe to require the form of a tree wherever one universe would not be ready to move with the opposite.

As per most scientists, the bigger bang happens within the interiors of the black holes, where a replacement universe will be formed, literally from the ashes of a pre-existing universe.

That mysterious inflation method and the explosion have convinced some researchers that multiple universes are possible or perhaps possible. In keeping with theoretical scientist Alexander Vilenkin of Tufts University in Massachusetts, inflation did not finish at an identical time.

Whereas it finished for everything that we can observe from Earth 13.8 billion years past, cosmic inflation, if truth be told, continues in different places. And as inflation ends in a particular place, a brand new bubble universe forms. It is often referred to as the idea of eternal inflation.

Arguments Against The Multiverse Theory

Many arguments are against the multiverse theories, from consultant’s happiness to different fields like physics and philosophy. In most cases, philosophies do not count the multiverses that square measure the disconnected kind, and given the topic, it is legitimate.

Within the case of science, most scientists fail to border the important multiverse, which means they are still unaware of the fact of life and how they may frame it underneath the context of the multiverse. Moreover, the essential theory of the constant falls short once it involves proving the presence of multiverses.

The Max Karl Ernst Ludwig Planck Satellite outcomes also show that there are no attractions from alternative bubble universes. The scientists believe that it ought to have occurred just in case of the presence of a multiverse close to our system.

Our universe grew exponentially within the initial moments; however, was this enlargement uniform? If not, it suggests completely different regions of the house grew at different rates and should be isolated from each other.

How square measure the laws of the universe this exact? Some propose that this inadvertently tends to ensure the one universe out of the many that happened to induce the numbers right.

Nobody is aware of evidently, and till we tend to do what can never be, the thought that our universe extends indefinitely is noteworthy.

The String Theory

The string theory is a proposed theory about the nature of matter and forces. It suggests that elementary particles are not solid spheres but rather tiny vibrating strings. These strings have both a length and a width.

They vibrate back and forth like a violin string. Each particle type corresponds to a specific vibration frequency. Thus, electrons have high frequencies, protons have low frequencies, neutrons have middle frequencies, and quarks have lower frequencies.

String Theory: Travel between Parallel Universes through Wormholes

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Even before string theory, the concept existed that the pure mathematics of the universe would give shorter methods between points. In fiction, this could be seen in stories like Lewis Carroll’s Alice in Wonderland, and in science, it is evident within the wormholes.

A wormhole is like a road to travel from one location on a surface to a different, even as a worm will dig through the middle of an apple to induce from one surface to a different, thus the name. This idea arises from Einstein’s theory of general theory of relativity, projected years before we formed string theory.

These ancient wormholes connect different regions within the same universe. They are exploited for several bizarre theoretical functions, despite the very fact that nobody is aware of obviously whether or not they exist.

Similarly, it’s potential that we tend to square measure somehow touching or connected to a different brand during a braneworld state of affairs. If these branes overlap, it is conceivable that there would be a way to travel from the area of one brane to the area of another brane.

Difference Between the Multiverse and Parallel Universe

The fundamental difference between the multiverse and parallel universe that we could draw between the two could be that parallel universe are similar to multiverses, except that instead of being parallel to this universe, they are parallel to themselves.

They are not connected to any other universe. We most likely are capable of deriving results from Parallel Universe and Multiverse definitions. A parallel universe is another copy of our universe, only, of course, with various possibilities.

Whereas the multiverse is the assortment of multiple universes which will or might not match our universe and every one the weather that our universe has. So, the parallel universe is a precise copy of our universe, whereas a multiverse might or might not be an identical copy of our universe.

A universe is all that we all know, have discovered, or guessed within the kind of a hypothesis. Our universe includes everything noticeable and non-observable. All stars, planets, galaxies, Milky Way, moon, etc. Scientists believe that there are several universes alive. In contrast, we do not hold any proof of it. However, because the universe is massive with no end, we tend not to see associate degrees where it finishes.

Can Multiverse Exist?

Yes, the multiverse can exist, and they indeed do exist. Scientists that do not agree with the fact have no evidence to present as their support. The argument that leads to the conclusion of one universe is self-contradictory.

It concludes that there is a lot yet to discover, and we know nothing about the universe from where the light has not yet reflected, or there are obstacles in its ways.

We have a Hubble telescope, and we want to see some distant areas, elements, stars, or the Milky Way. Our willingness to do so does not mean that we will be able to see everything that exists. On earth, we cannot see things that are behind the moon. However, in the complex structure of the universe, when millions of stars, Milky ways, and galaxies are revolving, the light never escapes and falls on the telescope’s lens.

To have the credibility of the theories mentioned above, I stumbled upon the story of a man who came from a place that did not exist and had a passport. It might make you believe in the existence of a parallel universe.

Allegedly, this man told customs he was in Japan and had legitimate visa stamps, currency from multiple European countries, checks from an unknown associate bank, and a driver’s license issued in Taured. He was sent to a building, and whereas they sorted things out, 2 immigration officers stood outside his building door.

However, once they visited to check on him in the morning, he was nonexistent. It was from fifteen stories up, on top of a busy street; thus, escaping through a window was unlikely, if not not possible. The Japanese capital Metropolitan local department searched; however, they could not settle the person from Taured.

The Green-Skinned Children Who Appeared

Another incident took place way back in time. Back within the twelfth century, two kids, a brother, and a sister, allegedly popped up within the village of Woolpit in Suffolk, England. Each had greenish-colored skin, spoke an unknown language, wore unconventional wear, and at first, refused to eat any food aside from raw beans.

They were taken in, cared for, and eventually, they tailored, developing a style for food and losing the inexperienced hue in their skin. Shortly once, the boy became sick and died; however, once learning to speak English, the woman explained that she and her brother were from an area wherever the sun did not shine bright, and it was constantly twilight.

Once they detected some bang, she and her brother were suddenly in a new place wherever they were eventually discovered, in Woolpit. The woman grew up and adjusted herself to her new surrounding.

Although it remained unknown how she and her brother got there, the woman urged her to get married and live her life here, in a dimension that may not be her place of origin. Incredibly unreal.

Were they time travelers, or did they slip from a parallel universe into our world? What could explain and justify this hoax or reality situation? You be the judge.

Fun Fact About the Multiverse

As per quantum mechanics, there is a multiple-world interpretation where our world can split according to every minute quantum event occurring every second. So, it can change even our world into a multiverse with endless possibilities. Or what if we lived in a multiverse the whole time without a single clue?

The True Science of Parallel Universes


If you knew multiverse and parallel existed, wouldn’t you want to stroll down the lane and look at things differently, unlike our world?

Anyway, the universe is not infinite. As time goes on, the universe will continue to expand until it reaches a point where it will start contracting again. The universe will collapse back onto itself and form a singularity at some point. History repeats itself, after all.


Javeria Najam
Javeria Najam
Content Writer


  1. Multiverses and parallel universes are some really cool ideas. But when you factor in the string theory, the whole thing gets utterly complicated. I wonder how the strings that are themselves smaller than subatomic particles, could create all the matter. Jeez the math behind it!


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