Why did there be water on Earth in the first place?

530 million years ago, during the Cambrian period, there were signs of a great explosion of life on Earth, and all kinds of aquatic life flourished. Judging from the fossils excavated in the hori, it seems that all life appeared at the same time.

Another puzzle for archaeologists is where did so many aquatic creatures come from? Why can't fossils be found in the pre-Cambrian stratigraphy? Archaeologists have come up with a bold speculation that before the Cambrian period, the earth was waterless, or a small amount of water, not at all like the oceans we have today.

It was only when a comet made of ice slammed into the Earth, bringing an abundance of water and comet life to the Earth, that the Earth showed signs of a major explosion of life.

In fact, there was water on the earth at the beginning, which refers to the formation of the earth's core dominated by iron-nickel elements, and the hydrogen with atomic number 1 and oxygen with atomic number 8 are also structurally stable, and the relatively stable compound composed of oxygen and hydrogen is water, and water has a spillover effect due to the gravity generated by gravity, and this spillover causes water to only exist outside the earth's core.

In the same way, in the process of formation of the mantle layer, due to the shrinkage process of the mantle layer material in the cooling and relative solidification, the rocks of the mantle layer will have a spillover effect and accumulate on the surface rock layer in the shrinkage process of cooling and solidification, and a large amount of water overflows to form the earth's primitive ocean.

Because the spillover effect of water and the spillover effect of air are formed almost at the same time, the earth's core produces a magnetic field, the geomagnetic field is relatively strong, when the ionosphere in the air is formed, the geomagnetic field and the ionosphere form a closed loop, the ionosphere prevents the high-altitude escape of air and water, so the primitive ocean has been preserved to this day.

There are also many asteroids and comets in the solar system, all of which have more or less water present and collide with the Earth at a specific time and in a specific way, and they all bring moisture to the Earth during their fusion with the Earth.

Since the earth has been running for billions of years after its formation, primitive humans did not know this situation, and modern human society has only existed for thousands of years, human beings have recognized the above-mentioned water as the concept of water on the earth from the beginning, in fact, this is a subjective attitude of human beings when they do not understand the history of the formation of the earth.

After the formation of the earth, the surface temperature was very high, and after more than 20 million years of meteorite bombing, a lot of water was added to the surface of the earth, and the water turned into water vapor and then formed liquid water, and then over time, it slowly became our current ocean.

The water molecule is a kind of molecule that is relatively easy to form by atoms, so that there is water first, and the hydrogen atom and oxygen atom that make up the water molecule are the most basic atoms.

For human beings now, with the increase in population, water resources are also very scarce, scientists say that a long time ago, there was no liquid water on the earth, so where did liquid water come from?

Because of the heavy rains that have been falling on the earth for hundreds of years, there is a lot of water on the earth in the first place.

Where does so much water on Earth come from? In order to unravel this mystery, scientists have made painstaking explorations. Such a point was made:

Water on the earth is formed by the gradual dehydration and degassing of the materials that make up the earth in the long course of the earth's history. Now, scientists believe that the Earth was formed by the condensation of interstellar dust. In its initial stages, it was a cold condensation that was the result of gravity and the collision of particles that compressed these interstellar dust materials tightly together to form the primordial Earth.

Later, the radioactive elements in the Earth's interior continued to metamorphose, and the temperature of the solidification mass continued to increase, eventually forming a habitable Earth.

Analysis of chondrites, which make up the Earth's mantle, found that they contained up to 10% of water. If there were only 1,800 of these chondrites that made up the original Earth, it would have been enough to form today's hydrosphere. The question is, was that the case?

The jury is still inconclusive.

Another explanation is that volcanoes emit large amounts of water, and the observation and study of today's active volcanoes are indeed accompanied by billowing smoke, red-hot lava eruptions, and large amounts of water vapor are released into the earth's atmosphere. Of the ejected gases, 75% is water, which is a large amount. For example, there is a volcano called "Ten Thousand Smoke Valley" in Alaska, USA, which emits 66 million tons of water vapor in the gas ejected every year.

Since the birth of the earth, there have been many volcanic eruptions, and the number of eruptions cannot be counted. More water vapor is spewed. Some scientists believe that it is at least half of the water available on Earth.

Part of the Earth's water comes from volcanic eruptions, that's for sure. Why do volcanoes emit water vapor? This is because the rocks and magma deep underground contain a lot of water.

When a volcano erupts, the water in the magma naturally evaporates and escapes from the earth's surface due to the high temperature of the lava. When this water vapor reaches the high altitude, it encounters cold air, condenses into water, and finally falls to the ground, forming a trickle of water into the ocean. According to scientists, the early earth was very hot, and about 600 million years ago, there were creatures on the earth, and slowly there were people.

However, there are also scientists who believe that the water on Earth comes from ice meteorites. What is an ice meteorite? It is a meteorite from the universe that falls to the earth in the form of ice, because its main component is water.

Ice meteorites have been found not only in the United States, Spain, etc., but also in China. For example, in 1983, in Wuxi, Jiangsu Province, China, an ice meteorite with a diameter of 50---60 cm fell to the ground. There are relatively few ice meteorites that fall to the ground, and most of them melt away in the atmosphere, and they become one of the important ** atmospheric water vapors.

Scientists say that the Earth can get 1 billion tons of water from ice meteorites in a year. American scientist Frank believes that 3 4 of the water on Earth comes from ice meteorites, isn't that true? We can't jump to conclusions yet.

The three explanations of the water on the earth have a certain factual basis, but these three explanations are also biased. It seems that in order to distinguish between the high and low, or to replace them with new theories, there must be more substantial facts to back them up.

The climate is warming, Antarctic glaciers are melting, and sea levels are rising.

71% of the Earth's surface is an ocean of water, known as water balls.

Perceptions of the origin of water are still widely divided, and there are currently about 32 theories about the formation of water. Here are a few of the main doctrines. One theory is that there was a primitive nebula of H2O molecules in the initial matter before the formation of the Earth, similar to the meteorites that now have an average water content, and that the Earth descended to the Earth after its formation, thus giving the Earth water.

Another theory holds that the original elements (hydrogen and oxygen) that formed water were formed only after the formation of the earth. Hydrogen and oxygen are combined under suitable conditions. Hydroxyl (OH) is generated. The hydroxyl group then undergoes complex changes to form water (H2O).

The Dutch astronomer Ott believes that the main ** on Earth is the upper mantle of the lithosphere of the interior of our planet. Half of the lithosphere is made up of silicon, of which silicates and water. These rocks are dehydrated at a certain temperature and under suitable conditions, such as volcanic eruptions, thus forming the Earth's water.

American scholar John F. Kennedy and others believed that when the rock is completely mixed in melting, it contains 75% silicate and 25% water. In the early days of the Earth's formation, volcanic eruptions were frequent, which accelerated the formation of the Earth's water. The earth's water is increasing due to the high temperatures in the earth's interior.

In the study, there is data that the ocean level has risen in the last 1,000 years. However, the rapid rise of ocean levels in recent decades may be largely due to global warming.

The origin of life on Earth is closely related to the existence of water. It can be said that without water, there would be no human life and all other living things on this planet. Of all living organisms, the organisms with the greatest water content are considered human beings.

Why is there water on Earth? Do other planets have water?

The presence of water on Earth is not an uncommon thing in the solar system. Because there is water on many planets in the solar system, we have found water on all eight planets in the solar system. Some planets have far more water than Earth.

This illustrates the fact that water is a ubiquitous substance in the solar system, which has existed since the beginning of the solar system.

Illustration: Earth is a water-rich planet.

We know that hydrogen reacts with oxygen to produce water. The most abundant element in the universe is hydrogen. In the universe, oxygen can be obtained through nuclear fusion reactions inside stars, and the oxygen in the universe will spread into the universe when the stars have supernovae**.

Supernovae** of the previous generation of stars ejects various material elements from the interior of the star into the universe and disperses into the nebulae in the universe.

Illustration: Water is an important component of the formation of the solar systemScientists believe that the solar system originated from a dust nebula. The hydrogen and oxygen that form water are abundant in this nebula, so that when the planets in the solar system were formed, this water was contained in the primordial material that formed the planets.

Therefore, I am more in favor of the fact that water on earth is present in the womb. After the formation of the primitive earth, there began to be a circle differentiation, and water rose from the interior of the earth to the surface of the earth. Later, as the earth's surface cooled, the water vapor in the atmosphere began to condense to form rainfall on the earth's surface, and rivers, lakes and oceans on the earth were formed.

Illustration: The water content of the planets in the solar system compares most of the water on Earth from the Earth's interior, and scientists have found that more than half of the Earth's water comes from magma in the Earth's interior. This water comes to the surface in the form of volcanic eruptions.

Therefore, it can be seen that the water on the earth existed when the earth was formed.

In addition to this, there is also a part of the water on Earth that comes from outside the Earth. Since water is very common in the solar system. Then there is water on other celestial bodies in the solar system, and they sometimes collide with the earth, which brings the water on them to the earth.

Like a comet, the whole thing is a big snowball, and the water content is very rich. When a comet hits the Earth, it brings water to the Earth.

Why is there water on Earth? I think the reason for this is that water is a ubiquitous substance in the solar system. In a solar system with such abundant water, it is difficult for the Earth to think of without water. Do you think that's the case?

Because after the birth of the earth, there are a lot of hydrogen and oxygen elements on the earth, and then they are combined to form water, so there will be water on the earth.

The reason why there is water on the surface of the earth is because there is a lot of groundwater in the interior of the earth, and then this water seeps into the land to form the current sea.

Because there is an atmosphere on the earth, it can effectively ensure that the water vapor will not disappear, realize the water vapor cycle, and ensure the balance between the earth's land and hydrosphere.

Why is there water on Earth? Do other planets have water?