If there is a billion-year-old advanced civilization in the universe, how terrible would it be?

The scientific community generally believes that the universe was born about 13.8 billion years ago, and according to scientists' estimates, rocky planets were already prevalent in the universe about 10 billion years ago. And we all know that the Earth is a rocky planet, only the Earth is lucky enough to happen to have a series of natural conditions favorable to life, and because of this, life on Earth can live and eventually evolve into human civilization.

In the vastness of the universe, such as the Earth's "lucky planet" can be counted, considering the age of the Earth is only about 4.55 billion years, we can even make reasonable speculation: in the billions of years before the birth of the Earth, the universe has been a large number of planets suitable for life, some of which Like the Earth, life was also bred, and step by step evolved an intelligent civilization.

For us humans, if some of these intelligent civilizations still existed in the universe until now, they would probably have developed into advanced civilizations much more advanced than humans. In other words, in the present universe, the existence of a billion years level of an advanced civilizations is not impossible.

Then the question arises, if there is a billion years level of advanced civilization in the universe, then they will be terrible to what extent?

The scientific community does not deny the existence of advanced civilizations, to better describe the possible existence of intelligent civilizations in the universe, scientists have also proposed the concept of the "civilization index", the value of which can be calculated by "K = (logo - 6)/10" to The value can be calculated by "K = (logo - 6)/10", where "LG" refers to the logarithm of 10 and "P" indicates the power of civilization.

As you can see, the civilization index is based on the amount of energy consumed per unit of time as a standard, which is relatively reasonable, after all, from the development of our human civilization, the higher the level of technology, the more energy is consumed.

We often hear the three cosmic civilization level is divided by this, that is, the first civilization, the second civilization, and the third civilization corresponding to the "cosmic civilization index" is 1, 2, 3, a simple calculation shows that the power of 10^16W, 10^26W, 10^36W.

The current power of human civilization is about 2 x 10^13W, and the civilization index is only 0.73, despite this, many researchers are optimistic that if the power of human beings according to the annual growth rate of one thousandth, it only takes more than 50,000 years to enter the third level of civilization, even if you count the time needed to break through the bottleneck of human civilization, this time will not exceed 1 million years.

To be conservative, we may multiply this time by 10, that is, after 10 million years, human civilization should enter the third level of civilization, so what will happen if human civilization develops for 1 billion years? The author believes that, again, there should be no problem to enter the fourth level of civilization.

Human civilization is so, and other intelligent civilizations in the universe should also be so, so if there are a billion years in the universe level of advanced civilization, then their civilization level should be four, or even higher.

Through the "civilization index" formula mentioned earlier, we can conclude that the power of a level 4 civilization is 10^46W, what is this concept? Let's say that the power of the sun is about 3.8 x 10^26W, which means that the power of a level 4 civilization is about 263.2 billion times that of the sun.

The advanced civilization that can control such a huge amount of energy, its strength is far beyond human perception, perhaps they have already understood the underlying mechanism of the universe, and may even directly modify the rules of physics, and therefore developed the FTL flight, space leap, mass-energy arbitrary conversion, extraction of vacuum zero-point energy and other cool technology, as long as they want, at any time can create or destroy a galaxy.

The question is, if there is really such a terrifyingly powerful advanced civilization in the universe, then why we have not found their traces?

Maybe we can think that their activities are far beyond the universe we can see, that is, the observable universe, and may even break the limits of three-dimensional space, and even if they leave traces in the observable universe, it will be too large to make us difficult to associate them with advanced civilizations.

For example, we know that the universe is in a state of continuous expansion, which causes distant galaxies to move away from us, this movement is also known as the "Hubble flow", and for galaxies in the universe, in addition to the effect of the "Hubble flow", they For galaxies in the universe, in addition to the effect of the Hubble flow, they also have their own motion, which we can call "intrinsic motion".

In theory, each galaxy in the universe has its own "motions", so if we look at a large number of galaxies, their "motions" should be chaotic, but in reality, this is not the case.

Scientists have found that in a region of the observable universe spanning about 3 billion light-years, the "motions" of almost all galaxies point to the same location between the constellations Centaurus and Sail.

Simply put, if there were no cosmic expansion, these galaxies would all be moving in the same direction, as if some powerful force had coalesced a large number of galaxies into a continuously flowing river, hence the name "cosmic undercurrents.

According to our knowledge of the universe, no force can cause such a large-scale mystery phenomenon in the observable universe, so the "cosmic dark current" has become an unsolved mystery.

Imagine if there is a billion-year-old advanced civilization in the universe, then the "cosmic dark current" could be their work. We can not rule out this possibility. Of course, this can only be considered speculation, so we look at it, and do not have to take it seriously.

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