Some have calculated that there may be as many as 40 billion planets in the Milky Way, our home galaxy, that could support life. There are also countless galaxies in the universe, such as the Milky Way. Considering these massive, almost infinite numbers, it seems impossible that there is no other intelligent life in the universe.
What's more, our civilization may not have been the first intelligent civilization in the universe. Recently, the question has increasingly shifted from "do aliens exist?" on "How can we find aliens?" Of the countless possible alien civilizations, some may have existed for hundreds of millions or even billions of years.
We could hardly imagine their level of science and technology. An astronomer named Nikolai Kardashev thought the same thing. He hypothesized that there could be alien civilizations billions or even tens of billions of years old, and with this in mind he began to classify civilizations according to their level of technological advancement. Kardashev decided that regardless of the type of alien, what it looks like or what it does for a living, civilization will need energy above all for its development. Of course, energy is necessary to sustain life, but developments in science and technology also require enormous amounts of energy. A civilization that produces more energy could be classified as a more advanced type of civilization. Kardashev then quantified the amount of energy consumed by the civilization and used this as an indicator in classifying possible alien civilizations. This method of classification is now called the Kardashev scale. Kardashev himself defined only three types of civilizations (from type I to type III), but subsequent researchers expanded it to type VII. Let's see how each type of civilization could look like.
A Type 0 civilization uses the natural resources found on their home planet to obtain energy. A somewhat advanced Type 0 civilization would also use resources other than trees, such as carbon black, oil, or natural gas. One of the characteristics of a Type 0 civilization is that it either has not developed propulsion technology or produces energy for all its propulsion by burning chemical fuel. A Type 0 civilization could be described as a "baby" civilization in the grand scheme of alien civilizations. On the Kardash scale, the type of civilization is determined based on the amount of energy produced per second. A Type I civilization produces at least ten to sixteenths of a power watt of energy per second. According to astronomer Carl Sagan's method of calculation, our global civilization would be at 0.72 Kardashev scale in 2018 based on the total amount of energy we consume.
The amount of energy would have to be increased tenfold to move 0.1 points on this scale. So we can estimate that it will take roughly 100 to 200 years for our civilization to rise from 0.72 to 1.0. Type I civilizations are also called "planetary civilizations". Planetary civilization is not dependent on natural resources such as soot or oil. Instead, their main energy source would be nuclear power. Although our current 0.72 civilization uses nuclear power plants to convert nuclear power into electricity, these power plants obtain their energy through nuclear fission. Nuclear fission is hardly ideal because it has a low energy conversion rate, produces radioactive waste, and carries a high risk of nuclear accidents. A Type I civilization would use nuclear fusion instead. It is thanks to nuclear fusion that our sun has burned for billions of years. If we could develop the ability to use nuclear fusion, we could obtain clean, safe and almost unlimited nuclear energy. The propulsion units used in a Type I civilization would mostly be nuclear powered.
Once we become a Type I civilization, we will be able to send manned spaceships almost any planet in the solar system. Our advanced science and technology would eliminate cancer and other incurable diseases caused by viruses and infections, and developments in regenerative medicine would allow us to regenerate any organ. This would drastically increase our average lifespan. We would be able to live not only on land but also in the sea and in the clouds. It is said that the transition from an early Type I civilization to an advanced Type I civilization would take about 3,000 years.
A Type II civilization is also called a "stellar civilization". The main source of energy for a Type II civilization would be the nearby stars. Once a civilization reaches the final stages of Type I, the energy generated by artificial nuclear fusion on a planetary scale is no longer sufficient to advance science and technology. The most efficient and realistic way of obtaining energy would then be to take it from nearby stars. Freeman Dyson, a theoretical physicist and contemporary of Albert Einstein, created the concept of an artificial structure called the "Dyson Sphere". He believed that as civilization developed, it would eventually become capable of harvesting energy from nearby stars. One way to do this would be to use a so-called Dyson sphere, a kind of shell built around the star.
A Dyson sphere could be used to capture most of the energy released by the star it covers. However, it would be inefficient and unrealistic to completely cover the star with such a sphere, and other structures have been proposed as more realistic, such as a Dyson ring installed around the star or a Dyson swarm consisting of multiple Dyson rings. Once our civilization reaches Type II, we will no longer suffer from energy-related problems in practical life. This will also eliminate poverty. We would be able to freely travel to and from any planet in the solar system and take the first steps towards colonizing space. In the life sciences, our regenerative medicine technology would reach the genetic level and we would be able to regenerate any part of the body. At our current rate, it is said that our civilization will become a Type II civilization in 100,000 to 1,000,000 years. A Type III civilization is also called a "Galactic Civilization".
A Type III civilization would obtain energy using similar methods to a Type II civilization. However, they will draw energy from nearby and distant stars throughout the galaxy. A Type III civilization would also see the first use of anti-gravity devices. Anti-gravity technology would be used not only in vehicles, but on an astronomical scale including planets. In my previous video "Massive UFO near the Sun" I showed footage of mysterious objects able to freely approach and leave the surface of the Sun. They could easily be energy collectors equipped with anti-gravity devices sent by a Type III civilization. A Type III civilization could use wormholes to warp across the galaxy, but it would not yet be able to create wormholes. Type III life forms would have already extended their lifespan to the maximum possible for their species, so the field of life science would have reached its endpoint.
Another goal of such a civilization would be to exceed their natural lifespan by extracting consciousness from the body and achieving immortality. However, this would not be possible for a Type III civilization. Although Kardashev believed that this was the peak of civilization and that further development would not be possible, other astronomers argued that even more advanced civilizations could exist. Type IV civilization is also called "universal civilization".
Although a Type III civilization is able to use wormholes to move around the galaxy, it relies on wormholes that already exist. In order for a civilization to freely move around the galaxy, it would have to be able to create its own wormholes. However, there is not enough energy in the galaxy to sustain artificial wormholes.
That's when a civilization takes its first steps toward becoming a Type IV. The main source of energy for a Type IV civilization would be supernovae. Supernovae are massive explosions caused during the final phase of a massive star's life. A supernova causes a concentrated and intense release of energy near the star. This would serve as an extremely efficient power source, as it would generate an amount of energy equivalent to the amount of energy stored and released by the star throughout its lifetime. A supernova occurs roughly once every 40 years in a single galaxy, so a Type IV civilization would travel across many galaxies to collect this energy. Once a civilization reaches this level, it will finally be able to extract consciousness from the body and achieve immortality. It would also be possible to create intelligent life, and many Type 0 civilizations could be created by Type IV civilizations. The gods and creators that appear in our myths and religions actually depict IV life forms. Yet a Type IV civilization is neither omniscient nor omnipotent. They progressed to the point where they finally realized an important truth. The theory of multiple universes is true. There are other universes outside of our own.
A Type V civilization is also called a "multiversal civilization". Once civilization realizes that the theory of multiple universes is true and real it will reach other universes, it will develop into a multiversal civilization. It would take an unimaginable amount of energy to reach other universes. A Type V civilization would start looking for energy in white holes. A white hole is an astronomical body that continues to release matter and energy and is the opposite of a black hole. The existence of white holes was predicted using time-reversal black hole solutions to Einstein's field equations. Although these exist only in theory for us now, a Type V civilization would discover the existence of white holes and be able to draw energy from them. It has been calculated that a single white hole would release an amount of energy equivalent to approximately 14 million times the energy of the entire galaxy. A Type V civilization would harvest energy from white holes in one universe to open doors to other universes. They would certainly believe they had reached the pinnacle of civilization, but they would soon come to a new truth. They have mastered the three-dimensional world, but life exists in higher dimensions as well. A Type VI civilization is also called a "multidimensional civilization". Once a civilization realizes that life exists in dimensions beyond the third dimension, it will take the first steps toward becoming a multidimensional civilization.
Even if we could somehow enter the fourth dimension, our three dimensional bodies could
be destroyed as soon as we enter it. However, this would not be a problem for Type VI lifeforms that have already shed their bodies and exist as pure consciousness. The problem for them would be to get enough energy to enter a higher dimension. They could use the almost unlimited energy collected from white holes in different universes to enter higher dimensions. Entering even a single higher dimension would increase what we could achieve a hundredfold. For example, such a civilization could freely travel backwards and forwards in time, transcend cause and effect, and become truly omniscient and omnipotent. They would soon come to a new knowledge. If Type 0 civilizations were created by civilizations like ours, who created us and our world?
A Type VII civilization is also called a "creator civilization". Unfortunately, the civilization cannot evolve beyond a Type VI multidimensional civilization. A Type VI civilization would have realized that there was a creator civilization, but would not have been able to evolve into a Type VII civilization no matter how hard it tried. The creator's civilization is not really a civilization, but existence itself. At this level exists the creator of all matter, energy, natural laws, space, time and dimensions. They would not be gods, but gods of gods. At our current level of 0.72, we can't even begin to imagine what a Type VII existence would look like…