According to scientists from Curtin University in Australia and specialists from the Planetary Science Institute in the United States, the Earth was formed by a giant ball of mud. This theory, as reported in a scientific journal, is currently considered quite acceptable and significant. It differs from the "traditional" vision of the formation of our planet, according to which meteorite rocks and dust aggregates were combined under the influence of gravity. For example, carbonaceous chondrites - relatively rare primitive rock samples in the early solar system - are involved in this.
However, experts believe that the activation of chemicals in the ball of the space object that formed the Earth occurred through water. According to one of the authors of the study, Brian Travis, there have been suggestions that some rocky asteroids, resembling meteorites in properties, are experiencing a number of the same hydrothermal changes. Accordingly, the new model of the formation of the Earth suggests that it was formed by a mud ball, which turned into a similar one precisely because the ice was melting, in connection with the heat that was given by decaying radioactive isotopes, plus dust. This theory has been verified through mathematical modeling. It turned out that it is quite convenient, it can clarify something. For example, why our Earth is so “watery”.
In general, different scenarios were previously known about how planets are formed. The basis of some of them is what came out of a gas and dust (protoplanetary) disk that revolved around the star that was forming at that time. There is, for example, a scenario called accretionary. According to him, it's all about the original planetesimals. According to one version, they were obtained when very small bodies collided in pairs, and according to another, the whole thing was in gravitational collapse in the center of the protoplanetary disk.
Subsequently, the emergence of dominant planetesimals is observed. Later, the latter will turn into protoplanets, which, again, can develop along two paths. In the first case, solid celestial bodies are obtained, like our Earth, and this option assumes that a body with an isolated mass somehow increases the numerical characteristic along the conical section, which shows what is the deviation from the circle, and there is the intersection of the orbits. Smaller protoplanets are absorbed, so a planet similar to ours is obtained. So, these are the main and most logical options for how the Earth could have formed.
There are also more original, implying conclusions, including from modern theories. For example, not so long ago in the scientific world they were pondering what would happen when everything in our Universe collapses. It is known that such a way of life is cyclical, a Big Bang occurs, matter expands and contracts, and as a result, stars, planets and so on are formed. Accordingly, someday the same thing will happen to her. What then should people do if by some miracle they manage to live up to this time, having found an opportunity to escape after the destruction of our planet by the Sun?
Some experts suggest that the technologies of that time (at least in one and a half billion years) will make it possible to create practically their own Universes, as they do now in computer role-playing games. That is, it will be possible to somehow learn how to form large black holes, not only in the laboratory, and to thicken all the necessary components. In fact, a new world of its own will be available, so that the destruction in the old does not touch, which may not be reversible. If we take this theory on faith, then it is logical to assume that someone else before people could learn to create Universes. According to various experts, aliens are smarter and more developed than us.
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If we assume that they really exist, then theoretically they could outrun people in technology so much as to create their own world, and in it they could fit the Earth and other parameters into it. This partially explains why aliens could so quickly come into the skies, often showing themselves to impressionable laymen, given that they could hardly survive on the planets of the solar system. The mechanism, of course, is quite incredible, but it cannot be called completely impossible. Moreover, it is believed that there are many Universes, they are in a certain space, called the Multiverse, and are located close to each other. Perhaps even capable of colliding with each other.
In any case, there is a theory according to which a "slight draft" is coming from some parallel object towards us - there is a so-called "cold region" in our Universe. According to one version, it is like this, because there are fewer stars, but according to the other - just because of the possibility of passage somewhere. That is, theoretically, if there is some kind of space with balls-Universes, then it may not be finite, but represent a kind of ephemeral container, such as a glass or a bucket, and this makes it possible to observe such formations for hypothetically highly developed aliens. Naturally, none of the theories can be considered 100% correct, since it is practically impossible to test it not so much on mathematical models or through logical conclusions, but in real form. Everything will become clear when humanity really will live to seeto understand all processes at least in the solar system, not limited to telescopes.
Irina Letinskaya