Everything in the universe happens according to the laws of physics. If there is a planet like our Earth in the universe, if there are other living things like the one on Earth, if all the living things there are mirror images toward us, if there is energy that is exactly the opposite of our energy, then the same things that happen here will happen there.We have come to the answer on the basis of mathematical equations and computer models.

Let's take the fact that an alien has arrived on Earth from a planet. He extends his right hand to the Earth to address us, and we should not hold those hands for any reason, because two different levels of energy come together, causing a great light to be created and everything here disappears.According to the laws of physics, time goes on in this universe, and if we ask if there is any evidence for that, we can give an example.

A glass filled with water, which falls from our hands to the ground and breaks down.If we can shoot it with a camera, we can see it in the reverse order. The pieces of glass, which have been shattered and broken into several pieces, can be seen coming together, while the water in the glass is the same as before. Then the glass comes up and stands in our hands.This phenomenon can be seen when the recorded and stored video is rewinded to the back. But in real life it can never be seen.This is the best example of how time only moves forward.

Here we will get acquainted with the term entropy.what really means is irregularity. There were no irregularities here at the time when the universe was formed, but as time goes on, the entropy continues to increase. Here we can take glass as an example.A full-fledged glass on the table, which falls to the ground and scatters into several pieces, is an entropy or disorder.

We can leave the present out of this, because the present, which is happening now, in milliseconds, it becomes the past. What is going to happen is the future, so we can see the present as a wall separating the two.Let's go back to the past, but we can never go back to the present, the reason for that is the entropy itself.As time goes on, the entrobia keeps increasing.But it never goes back.It does not go back to that state of being one, it keeps going forward.On the basis of this, if we build a time machine in the future, then with it we can travel to the future, but can never travel to the past.

There are 3 arrows for time.The first is the thermodynamic arrow of time, the second is the psychological arrow of time, and the third is the cosmological arrow of time. Let's get acquainted with what these three are.The thermodynamical arrow of time increases the entropy or randomness with the passage of time.According to the second law of thermodynamics, randomness has more than an order.

Many of you will be playing gypso puzzles, the form of an irregular image that has been broken into a number of pieces. If it is arranged properly, we can go back to the old picture. We can arrange gypso pieces in a variety of ways, and then we get different kinds of images.But it is only by arranging in a single way that one can arrive at a picture that is actually clear.

These gypso pieces are an example given by Stephen Hawkings in his book "Theory of Everything", in order to understand what is regular and what is random.The number of these pieces is increasing randomly as the universe evolves, and as that time progresses, the number of these pieces increases randomly.From there, we can only travel in a single way, so that we can reach our former state, which is never possible, because with the passage of time, its complexity is also increasing.The pieces are turning into billions.

The second one is the psychological arrow of time, which is the best proof that time is passing. It has nothing to do with the future.It doesn't travel into the future. It's we who travel, through memories. The third and final cosmological arrow of time, as the name implies, is related to cosmology or universe.The universe is expanding.

That expansion takes place through this arrow, and the universe travels from a small universe to a larger universe, and it will never go back. It is indicated by this arrow of time.

The third arrow of time gives us a lot of thought. As time progresses, the universe is expanding. If that expansion stops and then shrinks, what will happen? Will time travel backwards?Will we come back to the times gone by? The glass falls from top to bottom, and if so, when it shrinks, the broken glasses come up and come out of the table.People die years after they are born. If it happens in reverse, people will only be born after they die. Is this really a real thing? How can we understand whether this is real?

Some theories say that the universe that is now expanding will shrink after a point. It's called the Big Bounce theory. But we can't wait for that one period to try it out.Because big bounce will happen only after billions of years.Then what is a way, there is a way left. It's related to a black hole or black hole. What's happening in the black hole is that the exact opposite of development is happening there.

If we jump into the black hole, we shrink and become a much smaller substance. Whether it is possible to jump into the black hole is a question. But we don't need to get into that now.We need an experiment now. What happens when you get inside the black hole, will time travel backwards,If an asteroid jumps from the news period into the black hole, many things that happened in the past can be altered, which affects the present and the future.

But once we get close to the gravitational force of the black hole, we will go through a process called spaghettification.

Spagatta or noodle is the same way we stretch. It will then be crushed to the ground and reach the black hole.Therefore, no such experiment would be a reality.Stephen Hawking used to say that if our universe shrinks, it will go backwards, but another of his colleagues, astrophysics, said the opposite was true, and that such a turn would never happen.His name is Donguds.

Because the expanding universe does not really have boundaries.We can never say that if a universe without boundaries shrinks, it will shrink in the old way, in the old order.Moreover, people, including Stephen Hawking's students, came up with the theory that time never goes back, which was eventually accepted by Stephen Hawking himself.Time never goes backwards as the universe shrinks, which applies not only to the cosmological arrow of time, but also to the other two arrows of time.