The earth is the homeland for human existence. 4.6 billion years ago, an ordinary planet was born in the habitable zone of the solar system, and it is the earth. After hundreds of millions of years of evolution, the earth has evolved from the original world of purgatory into a beautiful blue planet.
By 3.8 billion years ago, the simplest primitive life was born in the ocean, opening the evolutionary path of life on earth. After billions of years of evolution and evolution, life is becoming more and more complex and more advanced, and finally human beings with intelligent life were born more than 2 million years ago.
Although humans in ancient times could see the starry sky above their heads, they didn’t know what kind of place it was. Due to the lack of guidance from scientific knowledge, people in ancient times arrogantly believed that the existence of mankind has a special meaning, and this view was also very popular even in the early days of mankind’s entry into the technological age.
In the opinion of some arrogant people, there is only one intelligent civilization on the earth, so the existence of human beings should have special significance. Is this really true? In fact, after human beings walked out of the earth with the help of technology, the vast starry sky has already given the answer.
Does alien civilization exist?
When mankind walks out of the earth and sees the vast universe, they all think of the same question: Does extraterrestrial life exist? Does alien civilization exist? There may be some people who use the view of the frog at the bottom of the well that the vast universe has only the earth as a living planet and only the human civilization.
However, as our knowledge of the universe continues to improve, the above viewpoints have basically disappeared. More and more people believe that alien civilization exists. From the perspective of the scale of the universe, the universe is so large that we cannot imagine it. Even the observable universe of human beings now reaches 93 billion light-years. Within this range, there are at least 2 trillion galaxies like the Milky Way. Every Milky Way has at least hundreds of billions of “solar systems.”
Judging from the birth of the universe, it is already 13.8 billion years old, and the first generation of civilization in the universe may have appeared at least 8 billion years before humans. What an exaggerated time span, even if the development of these civilizations is slow, the gap of 8 billion years is enough to far exceed the scientific and technological strength of mankind. This means that in the corners of the universe we don’t know, there are many super civilizations watching us silently.
Human civilization is still very low-level
Some arrogant people think that when human beings disappear someday in the future, the universe will have no meaning. This view is actually an ignorance of absolute “blind self-confidence”. No matter from which point of view, human civilization is still very low-level, why do you say that?
We generally understand the evolutionary history of human beings. The time when humans were born was about 2 million years ago. Human ancestors only started the rapid development of intelligence, which is far from the real formation of civilization. It wasn’t until 10,000 years ago that human beings formed the initial primitive civilization after a long period of development.
Counting from the time when mankind began to enter the agricultural era, the development time of human civilization has only been around 10,000 years. In this ten thousand years or so, 9700 was in a very backward era of handicraft industry. It was not until 300 years ago that the seeds of the Western Renaissance began to sprout, and mankind began to march towards the road of scientific development.
It was 200 years ago that the first industrial revolution was on the stage of history, and human science and technology really began to enter the palace and ushered in new development opportunities. Friends who have a good understanding of the modern industrial history of mankind should know that the real rapid development of human science and technology is only a matter of nearly 100 years. In particular, it has only been more than half a century for mankind to walk out of the earth to explore the universe.
Therefore, our exploration and research on the universe, extraterrestrial life and extraterrestrial civilization is actually very short. In such a short period of time, although good results have been achieved, from the perspective of the universe, the scientific and technological strength of mankind is actually still Very backward. Even for a small solar system, the area we can explore is very limited. Until now, the only planet that humans actually set foot on is the Moon.
Are the earth and the solar system special?
Some friends may think that if the earth can become a planet of life and can give birth to intelligent human beings, then the earth should be a very special planet, and the solar system is also a special star system. So are the earth and the solar system really special?
Some people have discovered many unusual places in the process of researching and exploring the solar system. For example, there is a huge Jupiter protection in front of the earth, the earth is just in a suitable habitable zone, and there is a relatively large moon protection nearby. The earth itself also has a strong magnetic field and atmosphere.
These special combinations make the earth special and the solar system special. So are these combinations really special? I am afraid not necessarily. In the eyes of many people, human beings can appear because of the special nature of the earth and the solar system. But when we look at the entire vast universe, you will find that both the solar system and the earth are extremely small, not even a small dust.
Even in the Milky Way, there are at least 100 billion star systems, and every star system will have a varying number of planets. Through simple calculations, we will find that the number of planets in the Milky Way has reached at least one trillion. With this huge number of bases, there is no shortage of terrestrial planets that are very similar to the Earth.
Through astronomical telescopes, scientists have discovered many planets that are relatively similar to the Earth within a limited observation range. Some planets are even more than 90% similar to the earth. What the earth possesses can also be found with a high probability on these similar planets.
We take the water resources needed for life as an example. Water is called the source of life by scientists. When we measure the possibility of life on a planet, an important reference standard is the full of water resources. Are there abundant water resources in the universe? The answer is yes. We all know that water is composed of hydrogen and oxygen molecules, and hydrogen is ubiquitous in the universe, and its content always ranks first.
Let’s take the small solar system as an example. Although the only planet with a large amount of liquid water on its surface is the Earth, there are a lot of water ice on the surface of many planets, and even some planets are completely covered by ice. And under these thick ice layers, there are sufficient liquid water resources. For example Europa, Enceladus and so on.
With sufficient water resources, then an important condition for the birth of life is met, so scientists speculate that there may be life outside the ice layer of Europa, Enceladus and other planets. The solar system is just an ordinary planet with abundant water resources. It is conceivable that other star systems also have abundant water resources.
Through these understandings, we can see that the earth is nothing special, it is just an ordinary planet in the vast universe. The earth can give birth to life and human beings, so other star systems, as long as certain conditions are met, there is a high probability that life and civilization can be born. Therefore, life may be universal in the universe, but because human beings are still very backward in science and technology, they are unable to discover them.
It can be seen that the existence of human beings has no special meaning. Even if human beings disappear one day, it will not bring the slightest disturbance to the universe. We are not just one of the countless civilizations in the universe, and we may still be of a relatively low level. For advanced civilizations, human beings are too small to attract their attention and interest.
Human beings want to become a special existence and a special goal in the universe, so they need to work hard. Only when we are truly strong and have the strength to control the rules of the universe can we become a special existence.