Do you also believe there may be a parallel universe?
That there is another version of you out there, living in a different reality and taking different
actions.
All you can do is hope that your other self is doing what you are unable to do in this
world.
You can only wish that your other self is content with both what you can't have and
what you can only imagine having in this world.
It's a really fascinating topic to discuss.
And that is what we will be studying today: the multiverse's existence.
Are you aware that recent findings in physics and astronomy tell us something about its
existence?
However, the real question is: is it really a parallel world or is it something totally
odd that we cannot possibly imagine?
Let’s not waste any moment, and let’s get this started!
The Big Bang, a massive explosion and subsequent fast expansion known as Inflation, marked
the beginning of the universe's story.
Since its creation 13.8 billion years ago, space has been expanding, and it is still
expanding today.
As far as we can tell, our universe is a single, expanding bubble of spacetime that spans 93
billion light-years from end to edge and is studded with billions of galaxies.
However, beyond this point, there may be things that we cannot see that could either be anything
more interesting than what we already know or just an endless void.
As we all know, we have a really vast universe.
However, let’s welcome the possibility of it being finite or infinitely big.
What would happen then given these possibilities?
If the universe is infinitely big, matter can be assembled in so many different ways,
and it must repeat and arrange itself similarly.
Parallel worlds might exist if the universe has no beginning or end.
Consider a deck of cards to better grasp the concept.
There are a limited number of arrangements that you can get when shuffling a deck; eventually,
the order of the cards must repeat.
The arrangement of matter will also need to recur since there are an endless number of
possible universes and a limited amount of matter.
This analogy will also tell us that if a multiverse is real, there would be an infinite number
of versions of you.
Your other self might be interested in the same thing in other parallel universes, but
some of them might be dressed differently and have probably chosen very different paths
in life and careers.
But is it really possible?
Well, keep in mind that the observable universe is limited to the distance that light has
traveled in the 13.7 billion years since the Big Bang; and anything beyond this limit is
regarded to be a different universe.
And if this is the case, a vast patchwork of realities made up of many different universes
would exist side by side.
The existence of parallel universes or the multiverse is still a mystery, and there is
considerable debate among experts on the subject.
Some believe that it may really exist, while others view this as pure science fiction.
Let's now talk about the reasons why some scientists believe in a multiverse as well
as the mysterious scientific occurrences that may actually be evidence that parallel worlds
exist.
To better grasp everything, we need to learn a bit of physics first.
According to quantum theory, an elementary particle like an electron can exist in a variety
of places, motions, and orientations.
The double-slit experiment is one of the most well-known, seemingly absurd physics experiments.
In this experiment, waves will produce an interference pattern after passing through
two small openings.
If we’re going to use a light wave, in addition to being a wave, light also consists of a
particle known as a photon.
Things start to get strange at this point.
When you put a photon through the double slits, it still creates an interference pattern as
if it were passing through both slits simultaneously.
But things don't stop there!
Simply by watching the double-slit experiment, we can see that the photon's behavior is altered.
The interference pattern is still created by a wave even though the photons are transmitted
through the slits one at a time.
Because of the way the experiment is arranged, it is difficult to know which of the two slits
the single-photon will go.
However, if researchers attempt to determine which slit the photon actually passes through,
they can position detectors in front of each slit.
As a variation, a unique crystal was put at each slit of the double-slit experiment in
an attempt to divide the entering photon into an exact pair.
The standard interference pattern should be produced by one photon, and the other photon
must go to the detector.
But do you know what happened after doing this modification?
It was ineffective.
This implies that looking at a photon can alter events that have already happened.
One of the biggest questions in quantum mechanics is still this one.
When physicist Erwin Schrödinger proved that the subatomic realm is essentially vague in
1926, the concept of a multiverse first emerged.
Any matter lies in a single, clearly identified location in our everyday, actual reality.
For instance, you put your pen in a pen holder.
So, you believe that you can only find your pen in the pen holder since it is where you
placed it.
But things are different when taking into account quantum mechanics.
In the quantum world, objects only come into focus when they are observed and exist in
a very minuscule state of probability.
It implies that an object is not in a specific location unless you look at it.
The object may probably be seen in one location over another, but it is not at one specific
location.
This phenomenon has been studied for almost a century and is a fundamental feature of
the physical universe.
Do you ever wonder what happened to all the other places your pen might have gone and
why a matter’s pattern should change depending on whether or not it is being looked at?
Well, Hugh Everett III came up with an unconventional answer in 1957 while discussing physics with
friends.
At that moment, he developed an idea on how to solve this most puzzling issue in quantum
mechanics.
This is where he considered the existence of a multiverse that is full of various realms
where all the quantum mechanical possibilities may coexist simultaneously.
He claimed that there are many possible variations, it is just that only one of them actually
manifests in the reality we live in.
Everything that might happen did happen in some world after all the other possibilities
scattered and each one created its own unique world.
During that time, no one believed Everett because this whole idea sounded so absurd.
But now, some physicists are taking the idea of a multiverse into consideration.
In fact, if a multiverse exists, it might be possible to solve several issues with theories
of cosmology, quantum physics, and even the philosophy of science itself.
In addition to the idea that numerous universes could be produced by infinitely expanding
space-time, the theory of Eternal Inflation also suggests the existence of other universes.
According to the eternal inflation theory, some regions of space stop expanding while
others continue to do so, creating a large number of isolated bubble universes.
It's possible that our world is merely one of many other bubble universes in the vast
space.
A further concept from string theory is Braneworlds, which tells us that parallel universes exist
just beside our own.
The primary notion of this theory is that there could be many other dimensions to our
reality than just the three dimensions of space and time.
There is a possibility that these three-dimensional braneworlds exist in a higher-dimensional
world.
Could there be parallel universes in reality?
Before we answer it, I just want to remind you that if you've made it this far in the
video, you're clearly enjoying it.
Give it a like, subscribe so you don't miss anything, and let us know what you think in
the comments section.
A group of NASA scientists conducted a scientific experiment in 2016, and the results were claimed
to be proof of parallel universes.
The aforementioned scientist was utilizing ANITA, or the Antarctic Impulsive Transient
Antenna, developed by NASA.
It is a helium balloon, positioned at a high altitude that has numerous radio antennas.
Ultra-high energy cosmic ray neutrinos, which are highly energetic particles than what we
have on Earth, are what ANITA was built to find.
Only these neutrinos may travel to Earth without being weakened or diminished.
Remember that the Earth can be totally penetrated by low-energy, tiny neutrinos with a mass
close to zero.
While the planet's solid surface would stop high-energy particles.
This is the reason why high-energy particles are constantly detected streaming down from
space.
But when ANITA discovered heavier particles known as Tau Neutrinos, the NASA science team
was astounded.
The particles might represent proof of a parallel universe, which would indicate they were going
back in time.
But this would also imply that time would be moving backward in the parallel universe.
However, the intriguing aspect of this is that, if there were any people living in this
potential parallel universe, they would think that we are the ones traveling backward in
time.
Although no one is certain at this time, the principal investigator of ANITA stated that
there were a small number of discrepancies in their data and that they would only consider
the existence of a multiverse once they have a thorough understanding that could be provided
by the standard model of physics.
The possibility of parallel worlds may be supported by other evidence that has been
discovered in space.
Important events in time and space leave their traces on the universe.
Recently, the Cosmic Microwave Background—the original microwave radiation that permeates
the whole known universe—was studied by the European Space Agency's Planck satellite.
This remnant radiation serves as a flawless chronology of the inflation and expansion
of our universe.
The CMB appears to have a uniform temperature at first glance, but at micro-kelvin scales,
hot and cold zones are evidence of temperature differences.
In other words, the matter wasn't distributed equally, making some regions of the universe
more crowded than others.
This is because of tiny quantum density irregularities that happened when the universe was just beginning.
A 1.8 billion light-years across a big and abnormally cold region on the CMB, however,
is the subject of an intriguing issue.
This unusual CMB cold patch, which emerges in the southern celestial hemisphere, is substantially
colder than the average CMB temperature.
Experts once thought that this region is colder because it is less congested than most areas
of space.
However, researchers claim that this frigid supervoid shouldn't exist in the first place.
Additionally, a different study indicated that there was only a two percent chance that
this Cold Spot evolved randomly.
If their hypothesis couldn’t answer its existence, then there may be stranger explanations
for this, and one could be a collision between our universe and another separate world.
When it comes to physics, black holes are a significant issue because either they may
destroy what we know or they ignore Einstein's theory of relativity.
The multiverse idea, also known as the Everettian theory, is currently being used by scientists
to address the issue concerning black holes.
Scientists are gaining new insights into the confusing issues involving black holes by
employing the multiverse approach.
Maybe, parallel worlds are related to black holes in some way.
What do you think about the existence of parallel worlds now that you've watched this video?
Let us know in the comments section.
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