71% of the earth’s surface is ocean, and these little planets have much more water than the earth

The earth is the home where human beings have lived for millions of years. In ancient times, people did not know how big the earth was. They thought that the land area was larger than the ocean area. However, with the continuous progress of human civilization, when people went out of the earth and looked back at the earth, they were surprised to find out how much water there was on the earth. We all know that the ocean area of the earth accounts for 71% and the land area only 29%.

Some people say that our planet should not be called the earth, it should be called the water ball. But in fact, the reason why the earth is called the earth is not because of the ocean area on the earth’s surface. Although the ocean area of the earth is 71%, compared with the whole volume of the earth, the liquid water of the earth is actually very small. The diameter of the earth is 12700 km, and the average depth is about 4000 meters They are all concentrated together to form a sphere. The diameter of the sphere is only 800 kilometers, far less than the volume of the earth. So our planet is also worthy of the name earth.

Some people may say, according to this, does the universe not exist the real water ball? Of course not. There are many water balls in the universe. Compared with the size of stars, the water content in these water balls is amazing. If you put them on the ground, you will submerge the whole planet and you will not see a piece of land. This is the real water ball.


Scientists find that water is a common existence in the universe through astronomical telescopes, and there are many planets with water. Far away, let’s take our solar system as an example. There are many planets with water in the solar system, such as IO, Europa, Ganymede, Titan, Triton and so on. The water content of these planets is very rich, but the surface temperature of these planets is very low because they are far away from the sun. All the frozen water can be seen on the surface of the planets, but there are liquid water oceans under these ice layers.

Many of these liquid oceans in the interior of the planet contain more water than the earth. For example, the amount of water in io is 1.5 times that of the earth, while the amount of water in Ganymede, Callisto and Titan is even 10 times that of the earth. If water from any planet is put on the earth, there will be no more land on the earth.

It can be seen that water is indeed common in the universe, and abundant planets are also common. Although there may be no liquid water on the surface, there is a large amount of liquid water inside the planets under the ice. Existence is the source of life. Does water represent the existence of life? Since the exploration of the universe, human beings have never given up looking for the existence of extraterrestrial life, but decades later, we still have nothing.

Although scientists have explored many planets in the solar system, they have not found the existence of extraterrestrial life. Therefore, many people believe that there can be no more planets in the solar system except the earth. But is this really the case? There are so many planets with underground oceans in the solar system that there is a great possibility of life.


The fact that there is no life on the surface of a planet does not mean that there is no life inside the planet. Most of the life on the earth lives on the surface, but it may not exist on the surface of an alien planet. It is entirely possible for life to choose to live inside the planet. You know, no one stipulates that life must exist on the surface. As long as there are suitable living conditions inside, it is natural for life to be born .

There are a lot of liquid oceans in the solar system. There may be life, even intelligent life, in the oceans inside the planets. However, it is not easy for human beings to explore the liquid ocean inside these planets. The surface temperature of these planets is low, and some ice layers are hundreds of kilometers thick. It is not easy to drill a hole in such a thick ice layer if we want to enter the interior.

However, human beings will not give up exploring these underground oceans. We can’t do it now, but with the progress of human civilization and science and technology, we will have more advanced spaceships and ice drilling equipment in the future. We can go to these planets, pierce the ice, and the detector can enter the internal liquid ocean, so that we can explore whether there is life.


Moreover, more and more scientists believe that there is a great possibility of life in these underground liquid oceans, but they are not sure about the degree of evolution of these lives, whether they are just low-level creatures like the earth’s marine life, or intelligent life like human beings. In any case, it will be a cross era discovery and progress for human beings to explore extraterrestrial life.

Due to the limitation of human science and technology, we want to go outside the solar system to find extraterrestrial life, which will be impossible for a long time in the future. Only when the speed of the spacecraft reaches sub light speed or light speed, can we go out of the solar system to explore. But it is not easy to achieve this, as short as a hundred years, or as many as thousands of years. Therefore, in the near future, we can only explore in the solar system. Perhaps the first extraterrestrial life discovered by human beings will also be in the solar system, possibly on these planets full of underground oceans.

Guys, do you think there will be life on the planet with underground ocean in the solar system? Welcome to leave a message below to express your unique opinions.

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