Guys, as you already know if anything in this world is mysterious then it must be our space. No doubt that our space is the most mysterious entity. It has millions…? billions…? trillions…? or you can say even infinite secrets concealed in it. And we managed to reveal only a few of them to date. There are lots of yet to be revealed. One of the secrets is that Is our universe has a mirror image of its own said “Parallel Universe”. In today’s post, we will discuss the Parallel Universe: A mirror to the existing world? So let’s get started.
What is the parallel universe?
There is a concept in astrophysics that suggests that there could be other universes besides our own, where all the choices you made in this life played out in alternate realities. The concept is known as a “parallel universe,” and it derives the astronomical theory of the multiverse.
The idea can be seen in many comic books, video games, television, and movies. Some popular franchises like Marvel Comics, DC Comics and Star Wars series feature stories set in parallel universes that are part of the multiverse. There actually is quite a bit of evidence out there for a multiverse.
Around 13.7 billion years ago, everything we know of in the cosmos was an infinitesimal singularity. Then, according to the Big Bang theory, some unknown trigger caused it to expand and inflate in three-dimensional space. As the immense energy of this initial expansion cooled, the light began to shine through. Eventually, the small particles began to form into the larger pieces of matter we know today, such as galaxies, stars, and planets.
One big question with this theory is: are we the only universe out there? With our current technology, we are limited to observations within this universe because the universe is curved and we are inside the fishbowl, unable to see the outside of it (if there is an outside.)
There are some theories available out there which suggest, why a multiverse is possible.
Based on research from Tufts University cosmologist Alexander Vilenkin, when looking at space-time as a whole, some areas of space stop inflating like the Big Bang inflated our own universe. Others, however, will keep getting larger. So if we picture our own universe as a bubble, it is sitting in a network of bubble universes of space. What’s interesting about this theory is the other universes could have very different laws of physics than our own, since they are not linked.
We don’t know what the shape of space-time is exactly. One prominent theory is that it is flat and goes on forever. This would present the possibility of many universes being out there. But with that topic in mind, it’s possible that universes can start repeating themselves. That’s because particles can only be put together in so many ways.
Another possible theory is exploring mathematical universes, which, explain that the structure of mathematics may change depending on which universe you reside. “A mathematical structure is something that you can describe in a way that’s completely independent of human baggage,” said theory-proposer Max Tegmark of the Massachusetts Institute of Technology, as quoted in the 2012 article. “I really believe that there is this universe out there that can exist independently of me that would continue to exist even if there were no humans.”
As the part of the “daughter universe” theory. If you follow the laws of probability, it suggests that for every outcome that could come from one of your decisions, there would be a range of universes – each of which saw one outcome come to be. So in one universe, you took the job in the USA. In another, perhaps you were somewhere different. And so on.
Going back to the idea that space-time is flat, the number of possible particle configurations in multiple universes would be limited to 10^10^122 distinct possibilities, to be exact. So, with an infinite number of cosmic patches, the particle arrangements within them must repeat – infinitely many times over. This means there are infinitely many “parallel universes”: cosmic patches exactly the same as ours (containing someone exactly like you), as well as patches that differ by just one particle’s position, patches that differ by two particles’ positions, and so on down to patches that are totally different from ours.
Famously, physicist’s Stephen Hawking’s last paper before his death also dealt with the multiverse. The paper was published in May 2018, just a few months after Hawking’s demise. About the theory, he told Cambridge University in an interview published in The Washington Post, “We are not down to a single, unique universe, but our findings imply a significant reduction of the multiverse to a much smaller range of possible universes.”
Dissidence among scientists against a parallel universe
Not everyone agrees with the parallel universe theory, however. In 2015, an astrophysicist Ethan Siegal agreed that space-time could go on forever in theory, but said that there are some limitations to that idea.
The key problem is, the universe is approximately 13.7 billion years old. So our universe’s age itself is obviously not infinite, but a finite amount. This would (simply put) limit the number of possibilities for particles to rearrange themselves.
Also, the expansion at the beginning of the universe took place exponentially because there was so much “energy inherent to space itself,” he said. But over time, that inflation obviously slowed – those particles of matter created at the Big Bang are not continuing to expand, he pointed out. Among his conclusions: that means that multiverses would have different rates of inflation and different times (longer or shorter) for inflation. This decreases the possibilities of universes similar to our own.
In the end, the bottom line is that “the space” is infinite and it is expanding continuously. We have not been able to see beyond our universe. Through our technology, we can only see within the existence of light. And let me remind you that our universe is made of around 68% of dark energy, 27 % of dark matter and only a few percentages of subatomic particles.
So we can say that we know only a very less about our space, and there are lots of things which are yet to be known. So it is quite possible that one of these theories may not be or may be correct. It’s a million…? not million, not billion, not trillion and so on……dollars question that how much secrets and wonders are our space have been concealed in its core.
So that’s it for today guys. I hope you would have enjoyed it. If you have any suggestions and queries related to the post, let me know in the comment section below. Please do share this post to your circle to explore the knowledge you must know.
Information source: Space.com