We all know that there is no eternal thing in this world, and everything in the universe has its destiny cycle. Even a powerful star will usher in the end of life tens of billions of years later, and even scientists believe that the universe is also a lifespan, and there will be an end of destruction.
The powerful celestial bodies in the universe cannot achieve eternity, so will the intelligent civilization like mankind continue forever? Many people may think that human beings are different from those celestial bodies and low-level lives. As a rare intelligent life, human beings can rely on wisdom to continuously develop science and technology. As long as the power of science and technology continues to advance, we will be able to live with the universe, and even surpass the universe one day. , To become an eternal civilization.
So is this perception correct? In fact, when we think about it carefully, we find it impossible. Human beings are like ants in front of the universe. It is too small. Although we are an intelligent civilization and are constantly developing technology, will time and various rules give humans enough time to become stronger?
Many scientists believe that human civilization cannot exist forever, and we will usher in the end one day in the future. If mankind had a day of extinction, in what way would it end? In this regard, scientists have proposed three ultimate conjectures.
1. Ending in a nuclear war
If we want to ask human beings, what is the most powerful weapon since they entered the technological age? I believe many friends will answer nuclear weapons. Yes, since Einstein put forward the mass-energy equation, scientists used this as a guide to start exploring and researching nuclear energy.
It has to be said that scientists are crazy, and soon made major breakthroughs in nuclear energy research, and used this to create devastating nuclear weapons. The terrible power of nuclear weapons was recognized in the latter part of World War II. From then on, mankind truly knew the power of this ultimate weapon.
In the years that followed, scientists have been studying and exploring more efficient applications of nuclear energy, and nuclear weapons have become more and more powerful. Nuclear energy has opened a new door for mankind. If applied well, it can allow mankind to enter a new energy era.
Unfortunately, in the direction of exploring nuclear energy, mankind often pays more attention to its force value. Therefore, it has constantly updated its powerful nuclear weapons. Regardless of whether it is an atomic bomb or a hydrogen bomb, as mankind’s understanding of nuclear energy continues to deepen, the power and destructiveness of the future will become more and more terrifying.
Many people may say that human research on nuclear weapons is more of a deterrent, rather than using them lightly. This sentence is true. People all over the world know that mankind cannot easily use nuclear weapons, otherwise it will allow mankind to enter the end times and may lead to the end of human civilization.
Under normal circumstances, mankind does not use nuclear weapons, but what if a third world war occurs in the future? You know, humans have warlike genes in their bones. From ancient times to the present, humans have never stopped wars. Even now in the peaceful era, small-scale conflicts are still being staged in some places.
Whether it is fighting for resources or for other things, the contradictions within human beings have never stopped. When this contradiction intensifies to a certain extent, a new world war will break out and fall into a world war. When a country faces extinction and survives, who will keep in mind: the warning that nuclear weapons cannot be easily used?
At that time, the war had already made mankind lose its sanity. As long as one country uses nuclear weapons, a world-wide nuclear war will break out. With the number and mighty power of human nuclear weapons, although the earth cannot be exploded, there is still no problem in extinction of life on the earth. Humans in particular have very weak resistance to nuclear radiation. After the nuclear war, the first to go extinct will be humans.
2. Ended with an asteroid impact
Regarding the asteroid impact, I believe everyone knows that the dinosaurs went extinct 65 million years ago. 65 million years ago, a brilliant biological era-the age of dinosaurs appeared on the earth. At that time, dinosaurs were all over the world and there were a lot of them. They were the absolute overlord on the earth at that time.
Dinosaurs have lived on the earth for 160 million years. If everything evolves according to normal, maybe one day, a branch of dinosaurs can also evolve toward wisdom, thus giving birth to dinosaur civilization. Unfortunately, an asteroid with a diameter of 10 kilometers hit the earth, putting an end to all possible dinosaurs.
There are a lot of asteroids in the solar system. There are at least 100,000 asteroids in the asteroid belt between Jupiter and Mars. In the Kuiper Belt at the edge of the solar system, the number of asteroids is too large to be counted. Even in the low-Earth orbit of the Earth, there are also many asteroids.
An asteroid with a diameter of 10 kilometers can only be regarded as a small person in the solar system, and there are many asteroids much larger than it. Any asteroid hitting the earth may bring a new mass extinction to the earth. Although the probability of an asteroid hitting the earth is very low in terms of probability, no one can guarantee a catastrophe 65 million years ago. It won’t be staged again.
Some people may say that with the continuous advancement of human technology, we will have the ability to intercept asteroids in the future, and naturally we will not worry about the threat of asteroid impact. Is this really true? Although from the perspective of science and technology, as long as our technological strength is strong enough, asteroids cannot threaten mankind, but the development of science and technology is slow. It will take a long time for mankind to develop to the point where it can intercept any asteroid.
For some asteroids with relatively small diameters, we do have the ability to intercept them in the future. But for those asteroids with a particularly large diameter, ordinary interception methods are simply impossible. For example, an asteroid with a diameter of more than 100 kilometers cannot be intercepted by human nuclear weapons.
If a huge asteroid hits the earth in the future, the only hope for mankind is to escape into space. If this is not possible, then the only thing waiting for mankind is destruction, and to escape to space, we need the ability of interstellar navigation, which cannot be achieved by simple technology.
The threat of an asteroid hitting the Earth is always present, it may not happen for a long time in the future, or it will happen tomorrow. If human civilization comes to an end in the future, the most likely extraterrestrial crisis may be an asteroid impact.
3. Ending with the invasion of alien civilization
Although humans have not discovered any extraterrestrial civilization until now, from the perspective of the universe, scientists believe that there is no doubt about the existence of extraterrestrial civilization. The reason why human beings cannot search for alien civilizations is mainly because our technological strength is limited, without the ability of interstellar navigation, and unable to explore other galaxies.
If extraterrestrial civilization exists, then at the age of 13.8 billion years in the universe, an intelligent civilization will inevitably be born at the same time. Human civilization has developed to its current technological strength in only about 5,000 years, so how strong will human civilization be tens of thousands or even hundreds of millions of years? This is a terrible answer that we cannot imagine.
Hawking once said that alien civilizations are not necessarily friendly, and some scientists have also proposed the law of the dark forest of the universe. If all of these are true, then plundering and colonization among civilizations in the universe may be very common. Once the existence of the earth is discovered by alien civilizations, it may bring devastating disasters to the earth and humans, thereby causing The end of human civilization.
The above three conjectures are only part of the many possible endings of human civilization. In fact, there are other things that may threaten mankind in the future, such as the threat of artificial intelligence. In the disasters of the universe, not only asteroid impacts and alien civilization invasions, supernova explosions or possible black holes, etc., can bring human destruction.