The earth has 100,000 tons of atmospheric escape every year, but why hasn't the atmosphere become thinner so far?

More than 4 billion years have passed since the birth of the earth, and during this time, the earth has also given birth to many lives. The earth is the only planet where life exists in the known universe. The reason why the earth can breed life is because the earth is in a relatively superior location and also has various living conditions required by life.

> > But in addition, the surface of the earth is still wrapped with a thick atmosphere. Without the protection of the atmosphere, life on the earth cannot survive. >

01

How high is the atmosphere?

The atmosphere is a transparent mixture of gases that mainly covers the earth's surroundings . It is difficult for us to observe the specific shape of the atmosphere in life, but the atmosphere is actually very thick. First of all, the troposphere will be formed upward from the surface, and the average height of the troposphere is generally about 12 kilometers , that is, the main place where rain and snow weather is formed .

The area 50 kilometers above the troposphere is the stratosphere , where the air is very thin, and because of the long-term impact of ultraviolet rays, the ozone layer is finally formed .

The ozone layer is the main guarantee to protect the earth's organisms from being disturbed by ultraviolet rays, but the continuous emission of greenhouse gases has caused the destruction of the ozone layer. 85 kilometers above the stratosphere is the mesosphere, the main component of which is nitrogen and oxygen.

800 kilometers above the mesosphere is the thermosphere, because the thermosphere is already relatively close to the sun, so this also causes the thermosphere to be in a highly ionized state due to the influence of the short waves emitted by the sun.

Above the thermosphere is the Shanyi layer. Scientists do not have an accurate answer to the height of the Shanyi layer. It is generally believed that the altitude is within 800 kilometers to 3,000 kilometers, but scientists have also detected Shanyi at an altitude of 22,000 kilometers. layers of air molecules, so the height of the atmosphere is actually ambiguous.

02

Why hasn't the atmosphere thinned yet?

In the solar system, Mars is also in the habitable zone, so scientists believe that there was liquid water on Mars at first , but now Mars has become barren because of the disappearance of the magnetic field . The sun is the center of the solar system, and it will continue to spread high-energy particles outward. At first, Mars could use its magnetic field to resist high-energy particles, but when the Martian magnetic field finally disappeared, the atmosphere of Mars was also affected by the solar wind, so it became more and more Thin.

The atmosphere of Mars gradually thinned, and the liquid water on Mars also disappeared, and finally became the current uninhabited planet. The situation on Mars may also be the vision of the future Earth , so scientists have also conducted research on this. However, scientists are still at a loss as to the generation of the planet's magnetic field. They can only believe that it is related to the molten iron core inside the earth's core with a high probability.

Compared with the atmosphere of Mars, the atmosphere of the earth is actually renewable , and the atmosphere of the earth is protected by the magnetic field, so the atmosphere will not be affected by solar particles.

In fact, according to the investigation of scientists, the atmosphere strips hundreds of thousands of tons of atmosphere to the solar wind every year , and this has been the case for a long time. The earth's atmosphere has always existed, the reason is that the earth's atmosphere will continue to produce more atmosphere, and there will be no shortage of income.