There is life outside of Earth, we are alone or life is something more common in the universe than we think or it is less common than we believe.
Where there is water there is life, at least as we understand life, as we know it; but there may be other combinations and other elements that can give rise to life, for example, on titan life forms could be created on titan with different events than those on earth, but the form we know is the one we have here On Earth, we know that life has emerged in the universe, at least on planet Earth. Furthermore, this formula is not that special either. Water is a fairly common element in the universe. The problem is that it is almost always frozen.
Mars had all the conditions to develop life in the initial phase in which it occurred on Earth, but then it lost water, if there are living beings on Mars they will be microorganisms or perhaps somewhat more complex beings but they will be under the surface, there was not enough time How to develop complex beings those questions about the development of life on Mars, it is not just the emergence of life, life on Earth has taken leaps that we still do not know how to explain well, most of the time of life on Earth This has been in the form of microorganisms, bacteria, multicellular beings, it made the leap to complex beings around 600 million years ago and we do not know very well why.
What were the circumstances that pushed that leap, from there the radiation of the creation of animals occurred and then we have the different extinctions and the current point at which we are, at the point of development of a technological civilization, which we do not know exactly if either. We will be able to survive our own technology, perhaps we are heading towards a point of mass extinction because of not knowing how to control our technological capacity, our weapons are becoming more powerful every day, our biological and chemical weapons too, we will know how to overcome those evolutionary risks.
There is a very strong debate about whether Mars has enough material to terraform it and achieve a dense atmosphere like Earth, the most critical say that it does not have enough material, there is not enough frozen water, there is not enough carbon dioxide and to achieve that atmosphere dense, it has been proposed to carry comets, but carrying comets that are basically frozen materials, frozen water and also other frozen gases, carrying comets to the orbit of Mars implies having a technology that at the moment we do not have.
Perhaps in a very distant future, but it will be very complicated because at the height of the orbit of Mars, comets come into activity due to the heat of the sun, with which comets become very unstable, with eruptions, with gas jets. .
Other studies suggest that it is not necessary to reach a level of atmosphere similar to that on Earth, it is not necessary to terraform the entire planet, it would be enough to increase the atmospheric density of Mars so that in the deep basins, the large Martian craters can There is an atmosphere dense enough to maintain liquid water and there are some basins that are millions of square kilometers in size and are more than 6 km deep. In fact, in those basins the atmospheric pressure right now is twice that of the that exists in the average of the planet.
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