How Close to Each Other Can Two Alien Civilizations Exist?

According to many astronomers, if a civilization exists in the universe that is superior to us in development, it should already have technologies that maximize the energy of their nearest star.

There's even a special term for such a mechanism the Dyson sphere. It's a mega structure that surrounds a star and absorbs its energy. As a result, the stars become unusually colored. This is all in theory, but it's such a star is ever discovered that would confirm the presence of a high tech civilization.

But where's the best place to look? How close can two civilizations from different planets possibly be to each other?

In whatever part of the universe civilization is born, it must meet the requirement of the presence of heavy chemical elements, the foundation of rocky planets as well as organic molecules, the building blocks of all living organisms in the early universe after the Big Bang, none of this existed. Therefore, around the very first stars in the universe, life certainly did not have a chance to begin. In these cosmic bodies.

There are absolutely no heavy elements, which means that there have never been any earth like planets nearby. Scientists call the stars population three stars they formed immediately after the Big Bang, and according to astronomers almost all have disappeared. Since their lifespan did not exceed a million years.

Population two stars are also not a good place to look for life. These objects contain only from 0.001 to about 0.1% of the heavy elements that are found in our Sun. Gas giants revolve around such stars which are to primitive and have a very low content of heavy elements for the emerging of life, let alone the appearance of highly developed civilizations.

In most galaxies. It's this type of star that predominates, greatly reducing our chances of finding life. The only hope of finding life remains in looking at population one stars which are very similar to our sun and have in their composition of two between one and 2% of the elements heavier than hydrogen and helium, which allows for the formation of suitable planets around them. Therefore, all searches for highly developed civilizations should concentrate here.

The ideal case would be to find life in our own planetary system, perhaps Mars, Venus or Thea, a hypothetically existing planet had living conditions at least at some point. However, it's unlikely that it reached or will reach in the future the level of civilization. In addition, if civilization existed on neighboring planets, most likely we would have been able to detect it by now, or it would have made itself known, so we need to look at much greater distances from the earth.

Since it is desirable to find a hypothetical civilization as close to Earth as possible, we will focus our searches in our galaxy in the vicinity of the galactic center of the Milky Way, there's a rather huge cluster of population one stars.

As you approach the center of the galaxy, stellar density increases even more. In addition, in this corner of the universe, there are a lot of heavy elements necessary for the emergence of life, it would seem that here might be an ideal habitat for the closest extraterrestrial civilization to us. However, there is one problem most of the Stars are relatively young and don't live even to a billion years.

The reason for this is just high density and the presence of massive black holes in the neighborhood that destroy the stars not allowing them to exist for a long period of time. Consequently, a developed civilization also wouldn't have time to appear. Even if life did once originate there, it perished not having managed to reach the necessary high level to be called civilization.

However, in the Milky Way and other galaxies, there's still other places where you can search for develop life. We're talking about star clusters located in the spiral arms of the galaxy. There are thousands of stars around which an earth like planet could be located, but these spiral arms exist for only a few hundred million years after which they decay. Stars are coming.

Constantly moving inside the arms or vice versa, leaving them in such unstable conditions, it's unlikely that any form of life would be able to achieve a high level of development.

If stellar systems are so unstable then it might be assumed that alien civilizations exist in interstellar space on the outskirts of the galaxy. It's quite wide and extends for several light years. Therefore, it's too dark and cold for life. But the closer the interstellar space is to the center of the galaxy, the narrower it becomes up to just point one light years. In such places the light of a star can reach the potential habitat of civilization and ensure its existence.

However, in most cases, the distance between star systems in the center of galaxies is much narrower. This makes interstellar space of very unstable environment collisions, interactions with black holes and other space objects are simply inevitable here. Therefore, one cannot dream up developed civilizations in these far corners of the universe either.

However, it's quite possible that there's no point in looking for extra terrestrial civilizations since they have already disappeared. One of them could well exist about 116 light years from Earth in the Kepler 444 star system. There are no planets around this star, but there are a lot of heavy elements in it. So inhabited planets may have existed there in the past, the age of Kepler for is approximately 11.2 billion years Earth is just 4.5 billion.

It's possible that even 7 billion years before the formation of the Earth a completely developed civilization could have appeared In Kepler 444, which has then since disappeared or migrated to another place, if so, life from Kepler for could have entered our solar system thanks to objects such as or more the incredibly mysterious asteroid that scientists recently discovered near the earth. Researchers believe that the solar system is a kind of fishing that that attracts such objects which could be carriers for life.

This is possibly how life in the Milky Way is capable of moving from one planetary system to another. Nevertheless, even if life in our galaxy began somewhere in this way, it's unlikely that it could reach the level of civilization. By the way, the best places to live are still not galaxies, but between them.

There are so called globular clusters, massive clusters of hundreds of thousands of stars that are located Outside of galaxies, the stars here are quite stable in very long-lived. Collisions with black holes or other space objects are also unlikely the globular cluster, but most importantly, there can be many terrestrial planets and conditions suitable for the emergence of civilization.

However, scientists in 2016 hope to find at least some signs of life much closer to Earth, namely, in the star system of Proxima Centauri. Located about four light years from us, researchers believe with great hope in the planet Proxima be which in many respects is similar to Earth.

But in 2017, a powerful flash occurred on the red dwarf of Proxima Centauri within just 10 seconds the star increased its brightness by 1000 times the planet was exposed to radiation levels 4000 times the level of radiation on earth during solar flares.

Therefore, if there was life I'm Proxima b has now been surely wiped out. So we have no choice but to continue the search, the Dyson sphere has not yet been discovered. But this doesn't mean that developed civilizations don't exist somewhere in the universe. Every moment in space, stars and planets die, which means that any high tech society will constantly be in search of a better place to live.

After all, such a fate awaits us in 5 billion years, when our sun begins to turn into a red giant, maybe then creatures from a distant galaxy will discover the earth and say that if there was life on this planet once well now it's destroyed or simply migrated to another place. If civilizations have been develops somewhere in the universe. What Is A Block Universe? This is another article.

How do you imagine them? Please write your ideas in the comments below.
How Close to Each Other Can Two Alien Civilizations Exist? How Close to Each Other Can Two Alien Civilizations Exist? Reviewed by Mahi Uddin on January 05, 2020 Rating: 5

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