Astronomers have indicated the place of mankind in the universe. Comparing the Earth to other planets, stars and objects in the universe The universe is colder this year than last year

All people experience mixed feelings when they peer into the starry sky on a clear night. All the problems of an ordinary person begin to be seen as insignificant, and everyone begins to think about the meaning of their existence. The night sky seems overwhelmingly huge, but in reality we can only see the immediate surroundings.

Below is a post about how vast and amazing our Universe is.

This is Earth. This is where we live.

And this is where we are in our solar system.

The distance on a scale between the Earth and the Moon. Doesn't look too big, does it?

Although it is worth thinking again. Within this distance, you can place all the planets of our solar system, nice and neat.

And here's the size of Earth (well, six Earths) compared to Saturn.

If our planet had rings like Saturn, they would look like this.

There are tons of comets between our planets. This is what one of them looks like compared to Los Angeles.

But this is nothing compared to our Sun. Just take a look.

This is what we look like from Mars.

Looking out from behind the rings of Saturn.

This is how our planet looks from the edge of the solar system.

Comparison of the scales of the Earth and the Sun. Scary, right?

And here is the same Sun from the surface of Mars.

But that's nothing. They say there are more stars in space than there are grains of sand on all the beaches of the Earth.

And there are stars much larger than our little Sun. Just look how tiny it is compared to the star in the constellation Canis Major.

But none of them can compare with the size of the galaxy. If we reduce the Sun to the size of a white blood cell and reduce the Milky Way Galaxy in the same ratio, it will be the size of the United States.

The Milky Way is huge. We are around here somewhere.

But that's all we can see.

However, even our galaxy is short compared to some others. Here is the Milky Way compared to IC 1011.

Just think of everything that could be in there.

Just keep in mind - an illustration of a very small part of the universe. A small part of the night sky.

And it is quite possible to assume that there are black holes. Here is the size of the black hole compared to the orbit of the Earth, just to intimidate

So if you ever get frustrated that you missed your favorite TV show... just remember...

This is your home

This is your solar system home.

And this is what happens if you zoom out.

Let's continue...

And a bit more…

Almost…

And here it is. That's all there is in the observable universe. And here is our place in it. Just a tiny ant in a giant jar

Incredible Facts

Have you ever wondered how big the universe is?

8. However, this is nothing compared to the Sun.

Photo of Earth from space

9. And this view of our planet from the moon.

10. This is us from the surface of Mars.

11. And this view of Earth behind the rings of Saturn.

12. And this is a famous photograph " Pale blue dot", where the Earth is photographed from Neptune, from a distance of almost 6 billion kilometers.

13. Here is the size Earth versus the Sun, which does not even fit completely in the photo.

The biggest star

14. And this Sun from the surface of Mars.

15. As famous astronomer Carl Sagan once said, in space more stars than grains of sand on all the beaches of the Earth.

16. There are many stars much larger than our sun. Just look how tiny the Sun is.

Photo of the Milky Way galaxy

18. But nothing compares to the size of a galaxy. If you reduce The sun to the size of a leukocyte(white blood cell), and shrink the Milky Way Galaxy using the same scale, the Milky Way would be the size of the US.

19. This is because the Milky Way is just huge. That's where the solar system is inside it.

20. But we only see very a small part of our galaxy.

21. But even our galaxy is tiny compared to others. Here Milky Way compared to IC 1011, which is located at a distance of 350 million light years from Earth.

22. Think about it, in this photograph taken by the Hubble telescope, thousands of galaxies, each containing millions of stars, each with its own planets.

23. Here is one of galaxies UDF 423, located at a distance of 10 billion light years. When you look at this photo, you are looking billions of years into the past. Some of these galaxies formed several hundred million years after the Big Bang.

24. But remember that this photo is very, very small part of the universe. It's just a tiny part of the night sky.

25. It is quite safe to assume that somewhere there is black holes. Here is the size of a black hole compared to Earth's orbit.

Did you know that the universe we observe has pretty definite boundaries? We are accustomed to associate the Universe with something infinite and incomprehensible. However, modern science to the question of the "infinity" of the Universe offers a completely different answer to such an "obvious" question.

According to modern concepts, the size of the observable universe is approximately 45.7 billion light years (or 14.6 gigaparsecs). But what do these numbers mean?

The first question that comes to the mind of an ordinary person is how the Universe cannot be infinite at all? It would seem that it is indisputable that the receptacle of everything that exists around us should not have boundaries. If these boundaries exist, what do they even represent?

Suppose some astronaut flew to the borders of the universe. What will he see before him? Solid wall? Fire barrier? And what is behind it - emptiness? Another universe? But can emptiness or another Universe mean that we are on the border of the universe? It doesn't mean that there is "nothing". Emptiness and another Universe is also “something”. But the Universe is that which contains absolutely everything “something”.

We arrive at an absolute contradiction. It turns out that the border of the Universe should hide from us something that should not be. Or the boundary of the Universe should fence off “everything” from “something”, but this “something” should also be a part of “everything”. In general, complete absurdity. Then how can scientists claim the ultimate size, mass, and even age of our universe? These values, although unimaginably large, are still finite. Does science argue with the obvious? To deal with this, let's first look at how people came to the modern understanding of the universe.

Expanding the boundaries

From time immemorial, man has been interested in what the world around them is like. You can not give examples of the three whales and other attempts of the ancients to explain the universe. As a rule, in the end it all came down to the fact that the basis of all things is the earthly firmament. Even in the times of antiquity and the Middle Ages, when astronomers had extensive knowledge of the laws of motion of the planets in the "fixed" celestial sphere, the Earth remained the center of the universe.

Naturally, even in Ancient Greece there were those who believed that the Earth revolves around the Sun. There were those who talked about the many worlds and the infinity of the universe. But constructive justifications for these theories arose only at the turn of the scientific revolution.

In the 16th century, the Polish astronomer Nicolaus Copernicus made the first major breakthrough in the knowledge of the universe. He firmly proved that the Earth is only one of the planets revolving around the Sun. Such a system greatly simplified the explanation of such a complex and intricate motion of the planets in the celestial sphere. In the case of a stationary Earth, astronomers had to come up with all sorts of ingenious theories to explain this behavior of the planets. On the other hand, if the Earth is assumed to be mobile, then the explanation for such intricate movements comes naturally. Thus, a new paradigm called "heliocentrism" was strengthened in astronomy.

Many Suns

However, even after that, astronomers continued to limit the universe to the "sphere of fixed stars." Until the 19th century, they were unable to estimate the distance to the luminaries. For several centuries, astronomers have unsuccessfully tried to detect deviations in the position of stars relative to the Earth's orbital motion (annual parallaxes). The tools of those times did not allow for such accurate measurements.

Finally, in 1837, the Russian-German astronomer Vasily Struve measured the parallax. This marked a new step in understanding the scale of the cosmos. Now scientists could safely say that the stars are distant likenesses of the Sun. And our luminary is no longer the center of everything, but an equal “resident” of an endless star cluster.

Astronomers have come even closer to understanding the scale of the universe, because the distances to the stars turned out to be truly monstrous. Even the size of the orbits of the planets seemed insignificant compared to this something. Next, it was necessary to understand how the stars are concentrated in.

Many Milky Ways

As early as 1755, the famous philosopher Immanuel Kant anticipated the foundations of the modern understanding of the large-scale structure of the universe. He hypothesized that the Milky Way is a huge rotating star cluster. In turn, many observable nebulae are also more distant "milky ways" - galaxies. Despite this, until the 20th century, astronomers adhered to the fact that all nebulae are sources of star formation and are part of the Milky Way.

The situation changed when astronomers learned to measure the distances between galaxies using. The absolute luminosity of stars of this type is strictly dependent on the period of their variability. Comparing their absolute luminosity with the visible one, it is possible to determine the distance to them with high accuracy. This method was developed in the early 20th century by Einar Hertzschrung and Harlow Shelpie. Thanks to him, the Soviet astronomer Ernst Epik in 1922 determined the distance to Andromeda, which turned out to be an order of magnitude greater than the size of the Milky Way.

Edwin Hubble continued Epic's undertaking. By measuring the brightness of Cepheids in other galaxies, he measured their distance and compared it with the redshift in their spectra. So in 1929 he developed his famous law. His work definitively disproved the entrenched view that the Milky Way is the edge of the universe. It was now one of the many galaxies that had once considered it an integral part. Kant's hypothesis was confirmed almost two centuries after its development.

Subsequently, the connection between the distance of the galaxy from the observer and the speed of its removal from the observer, discovered by Hubble, made it possible to compile a complete picture of the large-scale structure of the Universe. It turned out that the galaxies were only a tiny part of it. They connected into clusters, clusters into superclusters. In turn, superclusters fold into the largest known structures in the universe - filaments and walls. These structures, adjacent to huge supervoids () and constitute a large-scale structure of the currently known universe.

Apparent infinity

From the foregoing, it follows that in just a few centuries, science has gradually fluttered from geocentrism to a modern understanding of the universe. However, this does not answer why we limit the universe today. After all, until now it was only about the scale of the cosmos, and not about its very nature.

The first who decided to justify the infinity of the universe was Isaac Newton. Having discovered the law of universal gravitation, he believed that if space were finite, all its bodies would sooner or later merge into a single whole. Before him, if someone expressed the idea of ​​the infinity of the Universe, it was only in a philosophical key. Without any scientific justification. An example of this is Giordano Bruno. By the way, like Kant, he was ahead of science by many centuries. He was the first to declare that the stars are distant suns, and planets also revolve around them.

It would seem that the very fact of infinity is quite reasonable and obvious, but the turning points in science of the 20th century shook this “truth”.

Stationary Universe

The first significant step towards the development of a modern model of the universe was made by Albert Einstein. The famous physicist introduced his model of the stationary Universe in 1917. This model was based on the general theory of relativity, developed by him a year earlier. According to his model, the universe is infinite in time and finite in space. But after all, as noted earlier, according to Newton, a universe with a finite size must collapse. To do this, Einstein introduced the cosmological constant, which compensated for the gravitational attraction of distant objects.

No matter how paradoxical it may sound, Einstein did not limit the very finiteness of the Universe. In his opinion, the Universe is a closed shell of a hypersphere. An analogy is the surface of an ordinary three-dimensional sphere, for example, a globe or the Earth. No matter how much the traveler travels the Earth, he will never reach its edge. However, this does not mean that the Earth is infinite. The traveler will simply return to the place where he started his journey.

On the surface of the hypersphere

In the same way, a space wanderer, overcoming the Einstein Universe on a starship, can return back to Earth. Only this time the wanderer will move not on the two-dimensional surface of the sphere, but on the three-dimensional surface of the hypersphere. This means that the Universe has a finite volume, and hence a finite number of stars and mass. However, the universe does not have any boundaries or any center.

Einstein came to such conclusions by linking space, time and gravity in his famous theory. Before him, these concepts were considered separate, which is why the space of the Universe was purely Euclidean. Einstein proved that gravity itself is a curvature of space-time. This radically changed the early ideas about the nature of the universe, based on classical Newtonian mechanics and Euclidean geometry.

Expanding Universe

Even the discoverer of the "new universe" himself was not a stranger to delusions. Einstein, although he limited the universe in space, he continued to consider it static. According to his model, the universe was and remains eternal, and its size always remains the same. In 1922, the Soviet physicist Alexander Fridman significantly expanded this model. According to his calculations, the universe is not static at all. It can expand or contract over time. It is noteworthy that Friedman came to such a model based on the same theory of relativity. He managed to apply this theory more correctly, bypassing the cosmological constant.

Albert Einstein did not immediately accept such a "correction". To the aid of this new model came the previously mentioned discovery of Hubble. The recession of galaxies indisputably proved the fact of the expansion of the Universe. So Einstein had to admit his mistake. Now the Universe had a certain age, which strictly depends on the Hubble constant, which characterizes the rate of its expansion.

Further development of cosmology

As scientists tried to solve this problem, many other important components of the Universe were discovered and various models of it were developed. So in 1948, Georgy Gamow introduced the “hot universe” hypothesis, which would eventually turn into the big bang theory. The discovery in 1965 confirmed his suspicions. Now astronomers could observe the light that came from the moment when the universe became transparent.

Dark matter, predicted in 1932 by Fritz Zwicky, was confirmed in 1975. Dark matter actually explains the very existence of galaxies, galaxy clusters and the very structure of the Universe as a whole. So scientists learned that most of the mass of the universe is completely invisible.

Finally, in 1998, during the study of the distance to, it was discovered that the Universe is expanding with acceleration. This next turning point in science gave rise to modern understanding of the nature of the universe. Introduced by Einstein and refuted by Friedmann, the cosmological coefficient again found its place in the model of the Universe. The presence of a cosmological coefficient (cosmological constant) explains its accelerated expansion. To explain the presence of the cosmological constant, the concept was introduced - a hypothetical field containing most of the mass of the Universe.

The current idea of ​​the size of the observable universe

The current model of the Universe is also called the ΛCDM model. The letter "Λ" means the presence of the cosmological constant, which explains the accelerated expansion of the universe. "CDM" means that the universe is filled with cold dark matter. Recent studies suggest that the Hubble constant is about 71 (km/s)/Mpc, which corresponds to the age of the Universe at 13.75 billion years. Knowing the age of the Universe, we can estimate the size of its observable region.

According to the theory of relativity, information about any object cannot reach the observer at a speed greater than the speed of light (299792458 m/s). It turns out that the observer sees not just an object, but its past. The farther the object is from it, the more distant past it looks. For example, looking at the Moon, we see the way it was a little more than a second ago, the Sun - more than eight minutes ago, the nearest stars - years, galaxies - millions of years ago, etc. In Einstein's stationary model, the Universe has no age limit, which means that its observable region is also not limited by anything. The observer, armed with more and more advanced astronomical instruments, will observe more and more distant and ancient objects.

We have a different picture with the modern model of the Universe. According to it, the Universe has an age, and hence the limit of observation. That is, since the birth of the Universe, no photon would have had time to travel a distance greater than 13.75 billion light years. It turns out that we can say that the observable Universe is limited from the observer by a spherical region with a radius of 13.75 billion light years. However, this is not quite true. Do not forget about the expansion of the space of the Universe. Until the photon reaches the observer, the object that emitted it will already be 45.7 billion light years away from us. years. This size is the particle horizon, and it is the boundary of the observable Universe.

Over the horizon

So, the size of the observable universe is divided into two types. The apparent size, also called the Hubble radius (13.75 billion light years). And the real size, called the particle horizon (45.7 billion light years). It is important that both of these horizons do not at all characterize the real size of the Universe. First, they depend on the position of the observer in space. Second, they change over time. In the case of the ΛCDM model, the particle horizon expands at a rate greater than the Hubble horizon. The question of whether this trend will change in the future, modern science does not give an answer. But if we assume that the Universe continues to expand with acceleration, then all those objects that we see now will sooner or later disappear from our “field of vision”.

So far, the most distant light observed by astronomers is the CMB. Looking into it, scientists see the Universe as it was 380,000 years after the Big Bang. At that moment, the Universe cooled down so much that it was able to emit free photons, which are captured today with the help of radio telescopes. At that time, there were no stars or galaxies in the Universe, but only a continuous cloud of hydrogen, helium and a negligible amount of other elements. From the inhomogeneities observed in this cloud, galactic clusters will subsequently form. It turns out that it is precisely those objects that will form from the inhomogeneities of the cosmic microwave background radiation that are located closest to the particle horizon.

True Borders

Whether the universe has true, unobservable boundaries is still the subject of pseudoscientific speculation. One way or another, everyone converges on the infinity of the Universe, but they interpret this infinity in completely different ways. Some consider the Universe to be multidimensional, where our "local" three-dimensional Universe is just one of its layers. Others say that the Universe is fractal, which means that our local Universe may be a particle of another. Do not forget about the various models of the Multiverse with its closed, open, parallel Universes, wormholes. And many, many more different versions, the number of which is limited only by human imagination.

But if we turn on cold realism or simply move away from all these hypotheses, then we can assume that our Universe is an endless homogeneous container of all stars and galaxies. Moreover, at any very distant point, whether it be in billions of gigaparsecs from us, all the conditions will be exactly the same. At this point, the particle horizon and the Hubble sphere will be exactly the same with the same relict radiation at their edge. Around will be the same stars and galaxies. Interestingly, this does not contradict the expansion of the universe. After all, it is not just the Universe that is expanding, but its very space. The fact that at the moment of the big bang the Universe arose from one point only indicates that the infinitely small (practically zero) sizes that were then have now turned into unimaginably large ones. In the future, we will use this hypothesis in order to clearly understand the scale of the observable Universe.

Visual representation

Various sources provide all sorts of visual models that allow people to realize the scale of the universe. However, it is not enough for us to realize how vast the cosmos is. It is important to understand how such concepts as the Hubble horizon and the particle horizon actually manifest. To do this, let's imagine our model step by step.

Let's forget that modern science does not know about the "foreign" region of the Universe. Discarding the versions about the multiverses, the fractal Universe and its other "varieties", let's imagine that it is simply infinite. As noted earlier, this does not contradict the expansion of its space. Of course, we take into account the fact that its Hubble sphere and the sphere of particles are respectively 13.75 and 45.7 billion light years.

The scale of the universe

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To begin with, let's try to realize how large the Universal scales are. If you have traveled around our planet, you can well imagine how big the Earth is for us. Now imagine our planet as a grain of buckwheat, which moves in orbit around the watermelon-Sun, the size of half a football field. In this case, the orbit of Neptune will correspond to the size of a small city, the area - to the Moon, the area of ​​​​the boundary of the influence of the Sun - to Mars. It turns out that our solar system is as much larger than the Earth as Mars is larger than buckwheat! But this is only the beginning.

Now imagine that this buckwheat will be our system, the size of which is approximately equal to one parsec. Then the Milky Way will be the size of two football stadiums. However, this will not be enough for us. We will have to reduce the Milky Way to a centimeter size. It will somehow resemble coffee foam wrapped in a whirlpool in the middle of coffee-black intergalactic space. Twenty centimeters from it, there is the same spiral "baby" - the Andromeda Nebula. Around them will be a swarm of small galaxies in our Local Cluster. The apparent size of our universe will be 9.2 kilometers. We have come to understand the universal dimensions.

Inside the universal bubble

However, it is not enough for us to understand the scale itself. It is important to realize the Universe in dynamics. Imagine ourselves as giants, for whom the Milky Way has a centimeter diameter. As noted just now, we will find ourselves inside a ball with a radius of 4.57 and a diameter of 9.24 kilometers. Imagine that we are able to soar inside this ball, travel, overcoming whole megaparsecs in a second. What will we see if our universe is infinite?

Of course, before us will appear countless all kinds of galaxies. Elliptical, spiral, irregular. Some areas will be teeming with them, others will be empty. The main feature will be that visually they will all be motionless, while we will be motionless. But as soon as we take a step, the galaxies themselves will begin to move. For example, if we are able to see the microscopic Solar System in the centimeter Milky Way, we can observe its development. Having moved away from our galaxy by 600 meters, we will see the protostar Sun and the protoplanetary disk at the time of formation. Approaching it, we will see how the Earth appears, life is born and man appears. In the same way, we will see how galaxies change and move as we move away from or approach them.

Consequently, the more distant galaxies we peer into, the more ancient they will be for us. So the most distant galaxies will be located further than 1300 meters from us, and at the turn of 1380 meters we will already see relic radiation. True, this distance will be imaginary for us. However, as we get closer to the CMB, we will see an interesting picture. Naturally, we will observe how galaxies will form and develop from the initial cloud of hydrogen. When we reach one of these formed galaxies, we will understand that we have overcome not 1.375 kilometers at all, but all 4.57.

Downscaling

As a result, we will increase in size even more. Now we can place entire voids and walls in the fist. So we will find ourselves in a rather small bubble from which it is impossible to get out. Not only will the distance to objects on the edge of the bubble increase as they approach, but the edge itself will move indefinitely. This is the whole point of the size of the observable universe.

No matter how big the Universe is, for the observer it will always remain a limited bubble. The observer will always be at the center of this bubble, in fact he is its center. Trying to get to some object on the edge of the bubble, the observer will shift its center. As you approach the object, this object will move further and further away from the edge of the bubble and at the same time change. For example, from a shapeless hydrogen cloud, it will turn into a full-fledged galaxy or further a galactic cluster. In addition, the path to this object will increase as you approach it, as the surrounding space itself will change. When we get to this object, we will only move it from the edge of the bubble to its center. At the edge of the Universe, the relic radiation will also flicker.

If we assume that the Universe will continue to expand at an accelerated rate, then being in the center of the bubble and winding time for billions, trillions and even higher orders of years ahead, we will notice an even more interesting picture. Although our bubble will also increase in size, its mutating components will move away from us even faster, leaving the edge of this bubble, until every particle of the Universe wanders apart in its lonely bubble without the ability to interact with other particles.

So, modern science does not have information about what the real dimensions of the universe are and whether it has boundaries. But we know for sure that the observable Universe has a visible and true boundary, called the Hubble radius (13.75 billion light years) and the particle radius (45.7 billion light years), respectively. These boundaries are completely dependent on the position of the observer in space and expand with time. If the Hubble radius expands strictly at the speed of light, then the expansion of the particle horizon is accelerated. The question of whether its particle horizon acceleration will continue further and change to contraction remains open.

Typically, we think of a year as a fairly long period of time. In human terms, a lot can happen in 365 days (or so). But compared to the Universe, it is literally a moment. And even in such a short period of time as a year, subtle changes occur in our solar system, our galaxy and the universe, which add up to large, slow changes on the greatest time scales. Published on the web portal

Earth's rotation has slowed down

Of course, you probably didn't notice it. The time it takes for the Earth to rotate once around its axis - a day - is 14 nanoseconds longer than what it took for such a rotation a year ago. From this it follows that at the dawn of the solar system, the day on Earth was shorter: the Earth made a revolution in 6-8 hours, since the year consisted of more than a thousand days. But slow spin is just the beginning.

The moon is farther this year than last year

Again, you're unlikely to notice this, but there is a fundamental conservation law that makes this necessary: ​​the law of conservation of angular momentum. Imagine the Earth - Moon system: they rotate around their axes, while the Moon rotates around the Earth. If the rotation of the Earth is slowing down, this means that something needs to be balanced against this loss. That something is the Moon orbiting the Earth: the Moon is receding to save the system.

The sun is hotter than it was a year ago

The sun converts matter into energy, losing approximately 1017 kg of mass per year according to Einstein's formula E = mc2. By burning fuel, the Sun becomes hotter, starts to burn fuel faster, and this leads to an overall increase in energy output. In the far future, the Sun will become hot enough to boil Earth's oceans and end life as we know it. Ultimately, global warming caused by the Sun will end us all. And all this is only in our solar system; the galaxy and everything beyond it also changed in a year.

The universe is colder this year than last year

The afterglow of the Big Bang is terribly cold. This cooling and expansion will continue until it reaches absolute zero. For a year, we are unlikely to notice the difference, but water wears away a stone. A few more tens of ages of the Universe - and we will no longer know that the cosmic microwave background ever existed at all.

20,000 stars have become unattainable for us

Dark energy continues to grow in strength and increase the expansion of the universe, accelerating the recession of distant galaxies. Of all the observable galaxies in the universe, 97% have become lost to us forever. But the remaining 3% do not just huddle close by, they also run away faster and faster. With each passing year, the 20,000 new stars that were reachable (when moving at the speed of light) have become unreachable.

No doubt we don't know much about our universe. Also, we now have more clever theories about things we don't know than actual knowledge. But, among those things that we already know, we can highlight these 10 amazing facts about the universe.

1. When she appeared, it was very hot

The Big Bang Theory- this is one of the versions of the origin of the universe, widely accepted around the world. According to this theory, the temperature of the universe at birth was millions of degrees Celsius or billions of degrees Kelvin, and a second before birth it reached 10 billion Kelvin.

2. It cools down gradually

Today's universe has a temperature of about 451 degrees Celsius or 2.725 Kelvin. Compared to the temperature at which it originated, we can confidently say about a significant drop in temperature.

3. The size of the universe

Modern calculations have shown that the width of the universe is 150 billion light years. Given the fact that it continues to expand, it can be assumed that it will become wider by another billion light years.

4. Age of the Universe

It is estimated that the age of the universe is 13.7 billion years. However, this is mostly guesswork, and there is a 1% chance that this number is accurate.

5. Structure of the Universe

There are a huge number of systems in the Universe, including filaments, super-clusters, and groups of galaxies and clusters. Most of them are empty spaces or open space.

6.

Photo: Sweetie / flickr

Considering the fact that the earth is far from being flat, this is definitely one of the most amazing facts about the universe. Based on Einstein's Theory of Relativity, there are three basic shapes of the universe: open, closed, and flat. Research by the WMAP space observatory has proven that the shape of the universe is flat.

7. We can't see her completely.

There are many aspects of the universe that we simply cannot penetrate. Although different wavelengths in the electromagnetic spectrum, such as radio waves, infrared and X-rays, and visible light, help us see more, there is still much that cannot be seen with the naked eye.

8. The universe has no center

It seems to me that this amazing fact is difficult to understand. Many imagine a big bang, and the epicenter of the explosion will be the center of the universe, but in fact it is not.

9. Parts of the universe are moving away from each other

The universe is expanding, and all its parts are moving away from each other. For example, even the Moon is moving away from the Earth at a speed of 3 cm per year.

10. Comparison with ultra-small structures

The teachings believe that in order to understand all the secrets of the universe, a deep study of smaller structures, smaller than an atom, is necessary.

I hope these 10 amazing facts about our universe give you one more reason to appreciate the place we live in and of which we are a part. The universe is much larger than we can imagine. And there are many more of her mysteries that will forever remain a mystery to us.