How did water come from the early Earth? The answer given by scientists makes us understand

The earth is not only the home for human survival, but also a world of water. We all know that the water resources on the earth’s surface account for 71% of the total area, and there are also many water resources in the earth’s interior, which constantly come to the surface through geological activities and volcanic eruptions.

Looking at the earth from space, you can see that the earth is indeed a water ball. Water is the source of life. Only with abundant water resources on the earth’s surface can early life be born 3.8 billion years ago, and life can evolve step by step to finally produce intelligent life.

So some people have such a question: How did the water of the early Earth come from? According to scientists’ research on the formation of planets, the early Earth was a purgatory world with magma everywhere and very high temperature. The formation of early water was after the earth kept cooling, so how did these early water come from? Is it from the earth itself or from beyond?

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In fact, scientists have been exploring the origin of the earth’s early water. There are two mainstream conjectures: one is from the formation of the earth itself, and the other is from comets outside the earth.

Let’s first look at this conjecture from comets. I believe many friends know that water is composed of hydrogen and oxygen. When human beings just walked out of the earth, they thought that water was a very rare species in the universe. The planet with abundant water resources like the earth should be less in the universe, but with the deepening of scientists’ exploration of the solar system, we find that water is a very common material in the solar system.

The farther away from the sun, there are more water planets. There are a lot of water ice on the surface of many moons of Jupiter and Saturn, such as Europa and Ganymede. They have more water than the earth. Although there are abundant water resources on the earth’s surface, they are not as abundant as the water on several moons of Jupiter and Saturn.

In addition, Uranus, Neptune and most of the objects in the Kuiper belt on the edge of the solar system can be said to be a world of ice. Therefore, water is a universal substance in the solar system. Why is water a universal substance in the solar system? The reason is not complicated. The composition of water is very simple, that is, hydrogen and oxygen. Hydrogen is the most common and abundant element in the universe, and oxygen is also abundant.

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Far away from the sun, it’s easy to form water through chemical reactions of hydrogen and oxygen, so it’s not surprising that there are plenty of water planets. Similarly, when we look at the whole universe, water is a universal substance. It is believed that there are many water planets in various star systems. The solar system is not a special case, and the earth is not a special case. Therefore, we can draw a conclusion that life may also exist universally in the universe.

Although hydrogen and oxygen are ubiquitous in the universe, their chemical reactions can easily form water and then land on various celestial bodies. However, in the stellar system, it is difficult to form water within the habitable zone because it is too close to the star and is digested by the radiation energy from the star. In the solar system, habitable with three planets, respectively, Venus, earth and Mars, of course, closer to the sun there is a mercury.

In the space where the earth is located, the water formed by the combination of hydrogen and oxygen is difficult to exist in free form, so it is unlikely that the space water formed by condensation will land on the earth. Even so, Venus, earth and Mars formed abundant surface water resources in the early days. The reason for this is that the early solar system was not stable, and a large number of comets from the edge of the solar system kept coming to the inner galaxy.

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Comet, as we all know, is a water ball carrying a large amount of water ice. When the comet enters the earth’s atmosphere, the ice water carried by it will continue to melt. Some of it will stay in the atmosphere and form atmospheric water. Some of it will come to the surface with the impact and form water resources. With the constant impact of comets on the earth, a large number of water also came to the earth, and after the atmosphere has rich water vapor, there will be a water cycle.

This is the scientist’s first guess about the earth’s water resources: the gift from the comet, and the second guess is the earth’s self production and self marketing. For the early water from the earth itself, it can also be divided into several guesses. One guess is formed by the temperature change and gravity effect in the early Earth.

As we all know, water is generated by the reaction of hydrogen and oxygen. In the early stage of the earth’s internal material differentiation and convection, the earth gradually divided into spheres. In the process of differentiation, hydrogen and oxygen gases floated to the surface, and then generated water vapor through various physical and chemical actions. The water vapor liquefied and accumulated, forming the original ocean.

The second conjecture is that the water was produced by melting and then cooling when the basalt formed the original crust. We all know that there are radioactive elements such as uranium and thorium in the earth. These elements release heat energy through decay. As a result, the high temperature state of the earth’s interior was formed. The high melting point materials sank and the easy melting materials rose, from which the volatile materials were separated: nitrogen, oxygen, carbohydrates, sulfur and a large amount of water vapor.

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The third guess is that the water of the early Earth came from magma deep underground. As we all know, the interior of the earth was a world of lava, with flowing magma everywhere. The water resources in these magmas are abundant. Experiments show that the magma with pressure of 15 kPa and temperature of 10000 ℃ can dissolve 30% water.

Through the analysis of the magma produced by volcanic eruption by scientists, it is found that there is water in the magma. With the increasing depth, the water content of the magma is also increasing. Therefore, some scientists believe that in the early days of the earth, there was a large amount of water resources inside, which came to the earth in the form of magma eruption, forming a huge ocean area.

Whether the early water of the earth came from the earth itself or from an extraterrestrial comet is still unclear, but more and more scientists support that it came from the earth itself. This is because, with the continuous progress of human science and technology, we have more and more understanding of matter and the earth. In particular, the earth’s water cycle is the most important part of the whole ecological life.

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In the past, we always thought that the water cycle of the earth is mainly the cycle of the surface and atmosphere, but now more and more evidence shows that the water cycle of the earth’s interior and surface may be the most important link in the whole water cycle system. If this conclusion is correct, it means that the water content in the earth’s interior may far exceed the surface.

Of course, it is difficult to prove this with the current scientific and technological strength of mankind, although we have a comprehensive understanding of the earth’s surface. However, for the interior of the earth’s surface, we have no good exploration methods, and the scientific and technological strength of human beings can not really go deep into the earth’s interior, especially the mantle layer.

If we have the technology to reach the earth’s interior in the future, we may be able to discover more underground mysteries. At that time, we will be able to detect the water content of the earth’s interior in detail. Maybe we will really find the origin of the earth’s water there.

If the earth’s early water mainly came from the change of the earth itself, then other earth like planets, such as Venus and Mars, also had the conditions to produce a lot of water resources in the early days. In the early days of the earth like planets, they all had the same evolution process, and the same interior was a magmatic world with high temperature and high pressure.

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If so, it means that there are abundant water resources in the interior of Venus and Mars, but due to the bad surface environment, it can not exist on the ground, and can only be stored in the interior of the planet. Only when the surface has a suitable ecological environment can the internal water resources come to the surface and form a water world. It can be seen that there may still be a large number of water resources under the surface of Mars, which is great good news for mankind.

If we have water, we will have the basis for the survival of life. If we want to transform Mars into a second earth suitable for human survival in the future, we can’t do without a lot of water resources. If we know the origin of the earth’s early water, it will be of great help for us to understand the universe and extraterrestrial life.

My friends, what do you think of this? Welcome friends to leave a message below to discuss and express their opinions.

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