What was the universe before the creation of the universe ??
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It is rare to find a person who has not asked this question at least once in his life
"If our universe had a beginning, that is, if it was born at a certain moment in time, what was it before?"
That is to say, our universe was created 200,000 years ago.
Those who are very enthusiastic will then, without a moment's hesitation, ask: So what was 200,000 years ago?
In fact, it is a complex question, and at the same time mysterious and exciting.
Today let’s discuss this from a little science perspective.
Before that we need to understand what we mean by universe.
By universe in general we mean the visible world around us, that is, the visible planets-satellites, Chad, the stars, the sun, the fauna, the infinite (apparently) sky.
But the idea of the universe is a little different from the point of view of science. Science refers to the universe as being invisible along with all visible things that we cannot see with our eyes but we are 100% sure that they exist.
Examples of such things are dark matter, dark energy and black holes.
Of these, we do not yet fully know about Dark Matter and Dark Energy, or even what is happening at the center of the black hole.
That is why science has no regrets about it, even science is not sitting idly by, it is always trying to find out these mysteries.
From a scientific point of view, the universe began with a massive explosion about 13.6 billion years ago today (in fact, it is not an explosion at all, it can be said to be a massive expansion of space).
From that moment on, the journey of our visible universe began.
This theory of the creation of the universe has been scientifically named 'Big Bang' or 'Big Bang'.
According to this theory, about 13.6 billion years ago, everything in the universe, that is, space and all the forces of the universe, was concentrated in a small point-like position.
Then suddenly the vacuum starts to expand from this point, gradually increasing in size, as well as through certain steps the accumulated energy from quarks to quarks, various subatomic particles like electrons, protons, neutrons, positrons, neutrinos etc. are formed from quarks. . From these then atoms, then how many atoms combine to form molecules and finally our stars, planets, satellites are formed (I will write about the Big Bang in another expanded form one day).
A strong proof that the Big Bang happened is that if you look at distant galaxies or galaxies, you will see that each galaxy is gradually moving away from the other.
Now if we look back at this picture, we can say that at some point in the distant past, all of them were gathered in one place.
Comparing it to a bomb blast would be a bit easier to understand (although the real picture of the Big Bang is completely different and much more complex, even many of the ideas we know about the Big Bang are wrong).
Suppose a bomb explodes and you record a video of the explosion on your mobile phone.
If you look at the captured video, you can see that the pieces of the bomb have been scattering around since the moment of the explosion.
If you observe this image by pulling it back, you will see that over time, the scattered bomb fragments come together again and again, gathering in one place to form the previous detonated bomb.
In this example you can capture the moment of explosion as the beginning of time i.e. time = 0.
In that case, as the time elapses after the bomb explodes, the pieces of the bomb will also spread around.
You can also imagine the idea of the beginning of our universe in this way (the actual picture is completely different, in the case of the universe galaxies are not actually moving away like bomb particles, but the space between them is expanding every moment, so the galaxies are being forced to move away).
The Big Bang is the beginning of time for our universe, that is, time zero (time = 0).
As such, the age of our universe stands at 13.6 billion years.
Now the question is, what happened before the Big Bang, that is, 13.7 billion years ago?
There are a number of ideas or doctrines in this regard, although none of them have been proven so far, all are still in the hypothetical stage and in the early stages of research.
The doctrines are also quite funny and startling. These are:
1) The first doctrine
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According to many scientists, the question of what happened before the Big Bang is meaningless. Because before the Big Bang, where there was nothing to say about time, space, objects, does this question mean anything at all? Science can explain very well what happened 10 ১০ 43 seconds after the Big Bang, but what happened before that cannot be explained by any conventional formula of physics so far. For this we need new physics, which is still unknown to us, but scientists are still trying to develop it, trying to find out exactly what happened at that time. And yes, what scientists don't know, they proudly admit, and they don't see anything disrespectful about it.
2) The second doctrine
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Many of us have said that our universe was created by the Big Bang, meaning that there was nothing before it. But according to many scientists, this may not be the case. The universe has existed since time immemorial in a dot-like compressed form, and it began to expand from a dot-like dot-like shape through the Big Bang. That is, the Big Bang is just an expansion or transition through which the tiny universe expands and begins to grow in size. But no one knows exactly why it started to expand at that moment, or why it chose that particular moment to expand. If this is true, then time existed even before the Big Bang, we define the moment of the Big Bang as Just Zero Time (it's a lot like the number line, even before the zero number of the number line but there are billions of numbers like ... ... - 3, -2, -1, 0, +1, +2, +3, ......... etc).
3) Third doctrine
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According to the third doctrine, length, width, height, and time-these four dimensions বাদ there may be more high-level universes, and our universe may be a part of that universe. Our universe has been floating in that higher dimension for a long time. Suddenly it collides with another universe like ours and the impact energy during this collision heats up our universe and initiates the Big Bang, as a result of which we still see our universe expand from that beginning.
4) Fourth doctrine
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The fourth idea is very interesting. This theory has been dubbed the 'Eternal Expansion' Theory. According to this theory, there was a universe even before our universe, and our universe began to expand apart from it by being born in twenty forms. In the same way, from our universe, another universe has been born and expanded in the form of twenty, and from that more universes have been born in the same way. That is to say, from every visible universe, the universe has been born one after the other.
5) Fifth doctrine
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This doctrine gives us ideas about the periodic universe. Many scientists believe that the universe is an eternal entity, that it simply revolves from one state to another. That is,
Large explosion -----> Large contraction -------> Large explosion --------> Large contraction ----------> Large explosion ...... ..........
Thus it has been going on for eternity. We are now in the stage of a big explosion. Then the universe will shrink again and there will be a big contraction again. Then the big explosion again, then the big contraction again .... it will continue like this. It's like throwing a tennis ball on the floor, going up from the floor, going down to the floor, going up again, going down again. An uphill explosion can be caught and a downhill contraction can be caught.
However, with the discovery of dark energy, this possibility has now been greatly diminished. But yes, scientists are still not laughing at it, because dark energy has ghostly properties. Scientists believe that dark energy is causing galaxies to move away from each other, and space to swell. Now if after a certain time from today this energy starts behaving attractively but the universe will be forced to shrink again.
Truly, our familiar universe is full of mysteries!
Well written article