We see the starry sky all the time. Space seems mysterious and immense, and we are only a tiny part of this vast world, mysterious and silent.
Throughout life, mankind asks different questions. What is out there, outside our galaxy? Is there something outside of space? And does space have a border? Even scientists have been pondering these questions for a long time. Is space infinite? This article provides information that scientists currently have.
Borders of the Infinite
It is believed that our solar system was formed as a result of the Big Bang. It occurred due to the strong compression of matter and tore it apart, scattering gases in different directions. This explosion gave life to galaxies and solar systems. The Milky Way was previously thought to be 4.5 billion years old. However, in 2013, the Planck telescope allowed scientists to recalculate the age of the solar system. It is now estimated at 13.82 billion years.
The most modern technology cannotcover the entire space. Although the latest devices are able to catch the light of stars that are 15 billion light years away from our planet! They may even be stars that have already died, but their light is still traveling through space.
Our solar system is just a small part of a huge galaxy called the Milky Way. The Universe itself contains thousands of such galaxies. And whether space is infinite is unknown…
The fact that the Universe is constantly expanding, forming more and more new cosmic bodies, is a scientific fact. Probably, its appearance is constantly changing, so millions of years ago, as some scientists are sure, it looked completely different than it does today. And if the universe is growing, then it definitely has boundaries? How many universes exist behind it? Alas, no one knows.
Space expansion
Today, scientists say that space is expanding very quickly. Faster than they previously thought. Due to the expansion of the Universe, exoplanets and galaxies are moving away from us at different speeds. But at the same time, its growth rate is the same and uniform. It's just that these bodies are at different distances from us. So, Alpha Centauri, the star closest to the Sun, "runs away" from our Earth at a speed of 9 cm/s.
Now scientists are looking for the answer to another question. What causes the universe to expand?
Dark matter and dark energy
Dark matter is a hypothetical substance. It does not produce energy and light, but takes 80%space. The presence of this elusive substance in space, scientists guessed back in the 50s of the last century. Although there was no direct evidence of its existence, there were more and more supporters of this theory every day. Perhaps it contains substances unknown to us.
How did the dark matter theory come about? The fact is that galactic clusters would have collapsed long ago if their mass consisted only of materials visible to us. As a result, it turns out that most of our world is represented by an elusive, yet unknown substance.
In 1990, the so-called dark energy was discovered. After all, before physicists thought that the force of gravity works to slow down, one day the expansion of the Universe will stop. But both teams that took up the study of this theory, unexpectedly revealed an acceleration of expansion. Imagine that you throw an apple into the air and wait for it to fall, but instead it starts moving away from you. This suggests that a certain force, which has been called dark energy, is affecting the expansion.
Today, scientists are tired of arguing about whether space is infinite or not. They are trying to understand what the universe looked like before the Big Bang. However, this question does not make sense. After all, time and space themselves are also infinite. So let's take a look at some scientists' theories about the cosmos and its limits.
Infinity is…
Such a concept as "infinity" is one of the most amazing and relative concepts. It has long been of interestscientists. In the real world we live in, everything has an end, including life. Therefore, infinity attracts with its mystery and even some mysticism. Infinity is hard to imagine. But it exists. After all, it is with its help that many problems are solved, and not only mathematical ones.
Infinity and Zero
Many scientists believe in the theory of infinity. However, the Israeli mathematician Doron Zelberger does not share their opinion. He claims that there is a huge number and if you add one to it, the end result will be zero. However, this number lies so far beyond human understanding that its existence will never be proven. It is on this fact that the mathematical philosophy called "Ultra-infinity" is based.
Endless space
Is there any chance that adding two identical numbers will give the same number? At first glance, this seems absolutely impossible, but if we are talking about the Universe … According to the calculations of scientists, subtracting one from infinity results in infinity. When two infinities are added together, infinity comes out again. But if you subtract infinity from infinity, most likely, you get one.
Ancient scientists also wondered if there was a limit to the cosmos. Their logic was simple and brilliant at the same time. Their theory is expressed as follows. Imagine that you have reached the edge of the universe. They stretched out their hand beyond its borders. However, the boundaries of the world have moved apart. Soendlessly. It is very difficult to imagine this. But it is even more difficult to imagine what exists beyond its borders, if it really exists.
Thousands of worlds
This theory says that the cosmos is infinite. It probably has millions, billions of other galaxies that contain billions of other stars. After all, if you think broadly, everything in our life begins again and again - films follow one after another, life, ending in one person, begins in another.
In world science today the concept of a multicomponent Universe is considered generally accepted. But how many universes are there? None of us know this. In other galaxies there may be completely different celestial bodies. These worlds are dominated by completely different laws of physics. But how to prove their presence experimentally?
This can only be done by discovering the interaction between our Universe and others. This interaction occurs through certain wormholes. But how to find them? One of the latest assumptions of scientists says that there is such a hole right in the center of our solar system.
Scientists suggest that if space is infinite, somewhere in its vastness there is a twin of our planet, and possibly the entire solar system.
Another dimension
Another theory is that space has limits. The thing is that we see the nearest galaxy (Andromeda) as it was a million years ago. Even further means even earlier. Space is not expanding, space is expanding. If weIf we can exceed the speed of light, we will go beyond the border of space, then we will fall into the past state of the Universe.
And what is beyond this notorious border? Perhaps another dimension, without space and time, which only our consciousness can imagine.
Journey to the End of the Universe
This movie was made in 2008. High-quality graphics will show you our solar system, as well as the entire galaxy and even the space beyond. The distance the film takes viewers is hard to imagine. You will see unusual and mysterious phenomena that occur in space.
Journey to the End of the Universe is one of the best space documentaries.
