Millions of years ago, life on earth experienced a long 3.8 billion years of evolution and evolution, and finally human beings with intelligent life were born. The birth of mankind made the earth become extraordinary and upgraded to a planet of intelligent life. After the birth of mankind, after millions of hardships, primitive civilization was formed more than 5,000 years ago.
After entering the civilized era, mankind grew faster and faster. In the 1860s, it completely broke away from the backward handicraft industry, embarked on the road of industrial development, and began a brilliant era of science and technology. The power of science and technology is powerful. It only took more than 200 years for human beings to realize the rapid development of science and technology, with current achievements.
With the help of science and technology, mankind has made continuous breakthroughs in various fields, and has stepped out of the earth to begin preliminary exploration of the universe. After stepping out of the earth, mankind continued to accomplish one by one feat. In 1969, astronauts successfully landed on the moon aboard the Apollo 11, achieving the first manned moon landing by mankind.
The moon landing was only the first step for mankind to enter the starry sky. Later, we realized the exploration of Venus and the exploration of Mars. Voyager 1 and Voyager 2 also walked out of the heliosphere and entered interstellar space. At the same time, human observation technology has also been greatly improved, and the current observable range has reached 93 billion light-years.
The more we know about the universe, the more worrying human beings. Facing the vast universe, people have been thinking: Does alien civilization exist? In fact, we have already understood the answer to this question, but we are not willing to face it. The existence of extraterrestrial civilization will inevitably cause many changes to the future of mankind towards the stars. For the entire human civilization, the existence of extraterrestrial civilization is an opportunity and a crisis.
It has been 13.8 billion years since the birth of the universe. In such a long time, intelligent life should be born in different time periods. If this is the case, the strength of alien civilizations is also different. Some may have already become cosmic civilizations that can cross the interstellar, while others may still be in a very primitive stage, still using wooden sticks and stone tools. So where is the strength of mankind in the cosmic civilization?
In 1964, the Soviet astronomer Nikolai Kardashev envisioned the levels of alien civilizations, dividing the universe into three levels through the mastery of different energies. Later, scientists further refined this classification level, and came up with the seven-level classification standard for cosmic civilization.
In this seven-level classification standard, the lowest level is the first-level civilization. According to the energy standard, all the energy on the parent planet can be used. The first-level civilization is also called planetary civilization. If it is according to this standard, then human beings are not even the first-level civilization, at most it can only be regarded as the 0.7-level civilization.
Seeing this result, I believe that many friends are very disappointed. In fact, it is a relatively accurate standard to divide the strength of the cosmic civilization by mastering the degree of energy, and it has been universally recognized by the scientific community. Through these, we can also see that although human beings have stepped out of the earth, they are actually very weak, far from being able to compare with those powerful civilizations in the universe.
Of course, the road has to be taken step by step. After all, there is still too much time for human development. It is already remarkable that science and technology can be developed to what it is now in more than 200 years. For human beings, our first step towards the starry sky has been completed. Then the second step is to strive to become a first-class civilization. How long will it take for human beings to become a first-class civilization? Scientists believe that as long as three problems are solved, it is enough.
1. To achieve controllable nuclear fusion, energy is the cornerstone and key to the development of scientific and technological civilization. The reason why human technology has developed so fast for more than 200 years is because of our continuous breakthroughs in the application of fossil energy. Every breakthrough in energy can bring about a major advancement in science and technology, but with the rapid development of human science and technology, the potential of fossil energy has basically been developed to the extreme, and it is difficult to make a huge improvement.
If human energy wants to make a major breakthrough, it needs a more powerful energy source to replace fossil energy. And there are four kinds of energy that are more powerful than fossil energy in the current human cognition, namely nuclear fusion, antimatter, negative energy, and dark energy.
Among these four energies, the closest to us is nuclear fusion. As early as the last century, scientists were actively exploring and studying controllable nuclear fusion. Its energy level is not only several orders of magnitude of fossil energy, but also a completely clean and pollution-free energy source.
More importantly, once controllable nuclear fusion is achieved, mankind can develop more powerful nuclear fusion power, allowing spacecraft to enter and exit the earth freely. At that time, we can sail freely in all corners of the solar system, and the initial space age will come. With the flying power of free navigation, mankind can get rid of the shackles of the earth’s resources, and the resources of the entire solar system can be used by us.
Although controllable nuclear fusion is a very powerful energy source that can lead mankind to the stars, it is not easy to achieve it. As early as 50 years ago, some scientists confidently said that it only takes 50 years for humans to master controllable nuclear fusion.
But now 50 years have passed, and we have only taken the first step on the road to controllable nuclear fusion, and we are still a thousand miles away from the real realization. Now no scientist dares to confidently say that in 50 years, controlled nuclear fusion can be realized and applied in large quantities. According to conservative estimates of scientists, it may take at least 100 years for mankind to achieve controllable nuclear fusion.
2. A major breakthrough in materials science, energy is the cornerstone of scientific and technological development, and materials are the guarantee of scientific and technological development. Many technologies need to be supported by materials to be applied in reality. If materials science cannot achieve breakthroughs, even if energy is upgraded, then many technologies can only be on paper and cannot be applied in practice.
Let’s take controllable nuclear fusion as an example. To ignite nuclear fusion, we first need a high temperature of hundreds of millions of degrees Celsius, which is currently unbearable by any material. We must know that the strongest heat-resistant material currently available for human beings is only 4000 degrees Celsius, which is a thousand miles away from 100 million degrees Celsius.
Of course, scientists do not expect human beings to realize materials that can withstand high temperatures of 100 million degrees Celsius in a short period of time. Therefore, the research direction of controllable nuclear fusion scientists is to use magnetic confinement. Even if magnetic confinement is applied, although materials that can withstand high temperatures of 100 million degrees Celsius are not required, we still need a more powerful high-temperature resistant material, otherwise it is controllable Nuclear fusion is also impossible to achieve.
It can be said that the reason why controllable nuclear fusion is difficult to achieve is largely due to the material. If material science can make a major breakthrough, it may not be far from realizing nuclear fusion control.
3. The breakthrough of life. The first-class civilization is planetary civilization. It has been able to explore the parent galaxy freely, and can even step out of the parent galaxy and initially explore other nearby galaxies. But let us not forget that the environment of the universe is completely different from that of the earth, and it is a very harsh and complex environment.
The universe is a dark and cold vacuum environment, and there are various kinds of strong radiation in the universe. These are fatal threats to the weak human beings. As long as the human body is exposed to space for a short time, it will be completely finished. Even if you put on a spacesuit and hide in the space capsule, it will also be damaged by microgravity and cosmic radiation.
The future of mankind is toward the starry sky and needs to survive in the cosmic environment for a long time. With today’s weak human body, even if we give us a spacecraft, we cannot go out of the solar system to explore. Therefore, for human beings to explore the universe and become a first-class civilization, it is very necessary to upgrade our physical fitness.
Some people may say that the evolution of life forms is endowed by nature, and everything depends on nature to complete the upgrade of life forms. But the evolution of nature takes a long time, can humans wait? If you rely on nature to achieve breakthroughs in life forms, the hope is very slim. What should I do?
In fact, human beings have begun the exploration and research of life after entering the age of science and technology. Gene technology is a science that studies the mysteries of life. As long as genetic technology can achieve major breakthroughs, genetic technology can be used to make various modifications to the human body, allowing our bodies to adapt to the complex and harsh environment of the universe.
The above three problems are the three obstacles that are stuck on the road of human beings marching towards a first-class civilization. As long as they all break through, human beings can be upgraded to a first-class civilization. Only when it becomes a first-class civilization, can human beings be considered to be free from the shackles of the earth and have the strength to confront the forces of nature.