Five billion years ago, the center of a fast-moving nebula lit up on the third spiral arm of the Milky Way, the Orion spiral arm. Since the birth of the sun, it is the center and core of the solar system. With the birth of the sun, the solar system initially formed, and the eight major planets continued to appear.
The earth more than 4 billion years ago is very ordinary, it is no different from other planets. The surface is a harsh planet with lava flowing everywhere, but the position of the earth from the sun is very suitable. After hundreds of millions of years of harsh environment, as the earth continues to cool, a beautiful ecosystem has formed.
With a beautiful ecosystem, primitive life on Earth was born in the ocean 3.8 billion years ago. After billions of years of evolution, life finally gave birth to intelligent life mankind hundreds of years ago. Through continuous evolution and evolution, human beings formed primitive civilization 5,000 years ago, experienced various stages of civilization, and embarked on the path of technological development hundreds of years ago.
Technology has given mankind the wings of flying, allowing us to walk out of the earth and see the vast universe. Only when we truly walk out of the earth, we all know how small the earth is and how small humans are. At that time, the dream of mankind changed from dominating the earth to dominating the universe. I imagined that one day human beings could walk everywhere in the universe. Conquer countless cosmic civilizations and dominate the universe.
In the eyes of many people, although humanity’s current science and technology is still very backward, and human civilization is not even a first-class civilization, the speed of human science and technology development is very fast. As long as we can continue to develop, we believe that one day we can dominate. universe. And some people also put forward a limit of time, that is 10 billion years, at most 10 billion years later, mankind can dominate the universe.
So can mankind really realize this wish in a long time of tens of billions of years? 10 billion years is undoubtedly an extremely long time. It is only 13.8 billion years since the birth of the universe. Perhaps in people’s eyes, science is omnipotent. The end of science is theology, and God is above the universe. You can dominate the universe.
In theory, as long as we give humans enough time for technological development, we can conquer the universe and dominate the universe. Ideals are beautiful, but reality is often very cruel. Let’s briefly analyze whether humans have any hope of dominating the universe in 10 billion years.
According to current cosmology, the universe was born in the Singularity Big Bang 13.8 billion years ago, and then gradually evolved into a colorful universe through the continuous expansion of the universe. How big the universe is now, no one can give an answer, because the speed of galaxies moving away will accelerate with the increase of distance. After reaching a certain distance, the speed of galaxies moving away from us will exceed the speed of light, and photons will not be able to come at that time. When we get to the earth, we will not be able to observe the galaxy space there.
Therefore, scientists put forward the concept of the observable universe, and the current observable universe of human beings is about 93 billion light-years, and this range may be only the tip of the iceberg in the entire universe, and the real universe is too large to imagine.
With such a wide observable universe, how do we realize free exploration and reach every corner? If you want to reach faraway places, speed is the key. Without the advantage of speed, everything is empty talk. The reason why people in ancient times could not understand the earth was because at that time there was no advanced means of transportation, so naturally they could not reach the other side of the earth.
After human beings entered the age of technology, we had rapid transportation such as airplanes. At this time, the distance of the earth was constantly shortening, and we could reach every corner of the earth’s surface in a very short time. Technology has turned the earth into a global village. The speed of sound on the earth, supersonic speed is a speed that we think is very fast.
But this speed is not even the turtle speed in the universe. If we want to explore the universe, we need a faster speed. But Einstein’s theory of relativity tells us that the speed of an object cannot increase indefinitely. It has a limit, that is, the speed of light. The speed of a mass object can only approach the speed of light infinitely.
The speed of light is an extreme speed in our cognition. At this speed, can we freely explore the universe? The answer is impossible. We must know that the small Milky Way has a diameter of 100,000 light-years. If a spacecraft travels in a straight line at the speed of light, it will take 100,000 years to get out of the Milky Way. And above the Milky Way, there is a larger-scale supercluster of galaxies with a diameter of hundreds of millions of light years.
It is obviously impossible to get out of this supercluster at the speed of light. In fact, even if humans can fly at the speed of light in the future, the area we can explore is limited to the very limited starry sky around the solar system, and even free exploration of the Milky Way cannot be done. To, let alone explore the entire universe.
Of course, the theory of relativity does not make people completely desperate. It also puts forward the concept of time-space distortion. Under the time-space distortion, the phenomenon of super-light speed exists, and the expansion of the universe beyond the speed of light is a kind of space-time distortion phenomenon. Large-mass celestial bodies will produce a distortion of the surrounding starry sky, the greater the mass, the greater the distortion.
Among the celestial bodies currently recognized by humans, the mass of a black hole is undoubtedly the largest, so the space around it is very distorted, and the gravitational force generated by this distortion makes it impossible for light to escape. The theory of relativity also led scientists to propose the conjecture of a curvature engine, which is a spacecraft that uses space-time distortion to compress the space in front of the spacecraft and expand the space behind the spacecraft.
In the curvature engine mode, the spacecraft will be wrapped in space-time bubbles created by the distortion of space-time, and then move forward quickly with the flow of space-time. This kind of sailing speed exceeds the speed of light, and it does not violate the theory of relativity. The speed of the spacecraft itself is stationary, while the real movement is the space-time bubble that envelops it.
So can the curvature engine allow us to travel to every corner of the universe? The answer is impossible. The current curvature engine is only a theoretical conjecture, and it is very likely to be realized in the future, but according to the research of scientists, even the highest-level 9.9 curvature engine, the speed of the spacecraft is only ten thousand times the speed of light.
This speed is incredible fast when we see it, and it is only a matter of minutes to get out of the Milky Way, allowing us to explore a large number of galaxies around the Milky Way. However, if you want to explore the observable range of 93 billion light-years at this speed, there is nothing you can do. The curvature engine cannot realize free exploration even in the current observable universe of mankind, let alone the vast universe.
The curvature engine can’t allow humans to conquer the universe, so what other speed modes are available? The only thing left is the wormhole still under conjecture. Wormhole is also a conjecture under Einstein’s theory of relativity. It is the product of the extreme distortion of time and space, connecting the two spaces of the universe.
Through the wormhole, it can be reached in a short time, even at the edge of the universe, as long as there is a wormhole connected, we can go to explore in a short time regardless of the distance. However, whether this kind of wormholes beyond our imagination exists is still a mystery. Scientists have not discovered any suspected wormholes in the universe.
Some scientists speculate that the massive black hole in the center of the galaxy may be a wormhole, but the nearest massive black hole is also 25,000 light-years away. To explore it, only humans can achieve the curvature engine navigation, and to achieve such a goal, I don’t know how many years it will take.
Moreover, whether human civilization can last for a long 10 billion years is still unknown. According to the current cognition of scientists, in the 3.8 billion years of life on the earth, no creature or civilization can last forever. What’s more, there is no doubt about the existence of extraterrestrial civilization in the universe. The main reason why we can’t find it is that the distance scale of the universe is too exaggerated, and human beings have not yet been able to explore the solar system.
If there are a large number of extraterrestrial civilizations in the universe, with the age of the universe at 13.8 billion, the early cosmic civilizations may have been born more than 10 billion years ago. If these cosmic civilizations can continue to develop to the present, science and technology must have reached the same level as us. Unimaginable height.
If this is the case, these advanced civilizations should already have the strength to travel all corners of the universe, and have long become the overlords of the universe, but why the universe we see is so lonely, there is no trace of any advanced civilization visiting the earth? There are two possibilities for this situation. One is that the early cosmic civilization has ended and disappeared, and the other is that the early cosmic civilization has no ability to travel all corners of the universe.
If it is the second case, it means that it is basically impossible to develop into the hegemon of the universe in 10 billion years. From the perspective of the universe, human beings are nothing more than ordinary intelligent civilizations. What other cosmic civilizations cannot do, what ability does human civilization have to do?