What is the origin of Earth's magnetic field? Scientists tell its past and present

In fact, the beautiful earth hides many secrets. For example, under the protection of the atmosphere, human beings can live comfortably, and it is like a human mother who protects human beings all the time.

At the same time, more earth's secrets have been haunting mankind, which cannot be solved by the existing technology of mankind.

In the vast universe, there are many lifeless planets that do not have an important thing about the earth, that is, the earth contains a magnetic field, which refers to the magnetic field distributed in the space around the earth.

The dipole type is similar to placing a bar magnet at the center of the earth. Disciple North N is near the geographic South Pole, and Magnetic South S is near the geographic North Pole. The magnetic poles do not completely coincide with the geographic magnetic poles, and there is a magnetic declination.

The Earth's magnetic field belongs to the electron field and is the current effect of electrons passing through the outer core that rotates with the Earth. Earth's magnetic field is extremely important to life on Earth. If the earth loses its magnetic field, human beings may not be able to survive, so how is the earth's magnetic field generated? The person who proposed the concept of geomagnetic field theory in history in 0x8 BC was Gilbert of England.

In 1600, he made an argument that the Earth itself was a giant magnet with its poles coinciding with the geographic poles. This theory establishes the relationship between the geomagnetic field and the earth, pointing out that the origin of the geomagnetic field should not be outside the earth, but should be inside the earth.

In 1893, the mathematician Gauss created a mathematical method in his work to describe the magnetic field of the disciple from the hypothesis of the origin of the disciple and the absolute strength inside the earth, so that the measurement and origin of the geomagnetic field can be expressed by mathematical theory, but this It is just a formal theory, and does not elucidate the origin of the geomagnetic field in essence.

Scientists have mastered the distribution and changes of the geomagnetic field, but the academic community has not found a satisfactory answer to the origin of the geomagnetic field. Regarding the origin of the geomagnetic field hypothesis, it can be divided into two categories. The first category is based on existing physical theories, the second category is unique.

It believes that a heavy object different from the earth, the existing known theories have unique book rules, so what effect does the earth's magnetic field have on the earth? We all know that the sun emits a lot of light and heat, but otherwise, from the sun.

A large number of high-temperature, high-velocity, low-density particle streams are ejected from the surface of the sun, which we call the solar wind. The solar wind is a type of plasma that creates a magnetic field.

When its magnetic field meets the Earth's magnetic field, it interacts so that the solar wind is blocked by the Earth's magnetic field and continues to orbit the Earth, forming an inner horn layer surrounded by the solar wind. It is precisely because of the existence of the earth's magnetic field that the earth's atmosphere will not be easily blown away by the solar wind, thus effectively protecting the earth.

So what would happen to the Earth if it lost its magnetic field? When a compass fails, it's really just a tiny magnet that, like all magnets, binds to a nearby magnetic field.

Conveniently, Earth's magnetic field is strong enough to force a compass to align with north-south. However, with our planet's magnetic field gone, the compass will point to any nearby magnetic source, even a rocky outcrop. Scientists have documented this effect before. A natural female near anomalous Earth caused the compass to malfunction.

Changes in the magnetic field in the Earth's crust have been found around the world, for example in the Central African Republic, causing compass needles to move randomly, making it impossible for them to navigate. If our planet's magnetic field disappeared, the roaming compass could become the norm across the world. Birds can't migrate, and humans aren't the only animals that use Earth's magnetic field to navigate. Many birds, turtles, lobsters, bees, Guiyun and even fruit flies have built-in biological compasses. Birds use this ability to seek out warmer climates in winter, while returnees sail the open ocean in search of beaches to spawn.

Scientists even believe that most female turtles return to the same beach every year, a feat of free compass. Many animals that rely on compasses for navigation could be in serious trouble if Earth's magnetic field disappears. Turtles can literally get lost on the road, migratory birds can fly in the wrong direction, threatening their survival, and bees can get lost trying to find their hives, which can affect the thinning of flowers and other vegetation.

These and many other creatures could face extinction, power outages in three regions, and damage to satellites as their navigational abilities are severely compromised. Human health is an issue, but without the geomagnetic field, our technology is at risk. Satellites can and do experience solar storms.

Without Earth's magnetic field, every electronic device could be affected by cosmic rays and energetic particles from the solar wind. In fact, solar activity once caused such a problem. In 1989, a giant sun occurred, the surface of the sun overheated, and a plasma explosion hit Earth's magnetosphere, cutting off power to Quebec, Canada.

The province's power grid was interrupted for 12 hours, and surrounding areas scrambled to maintain the normal operation of the power grid. Some satellites were damaged because their delicate electronics were unable to cope with the massive solar storm, and many lost control within hours of the event. Although the 1989 Disciple storm was extremely large, the solar wind always hits our magnetosphere, even during normal solar activity.

If Earth lost its magnetic field, there would be no magnetosphere and no defenses. Even from weak solar storms, our power grids are more vulnerable than ever, and even our computers and other electronics can be damaged by solar storms.

Fourth, our atmosphere could be stripped away, perhaps losing the most horrific effects of Earth's magnetic field, and perhaps losing the air we breathe, and the solar wind will again be the culprit. The sun's natural way is so powerful that it can easily separate gas from a planet's atmosphere until there is little to no gas left. In fact, this is likely to happen on Mars. Mars may be very similar to Earth, with wet oceans and a thick atmosphere.

Unlike our planet, however, its magnetic field disappeared billions of years ago, and its atmosphere was completely unprotected, causing it to be ripped apart into space. Once its air pressure drops low enough, its water begins to evaporate, until it is also carried away by the solar wind.

Without our geomagnetic field, our atmosphere, oceans and life on Earth could suffer the same dire fate. While exploring the universe, human beings are also looking for life beyond the earth.

Mars is very familiar to humans on Earth. Since the last century, human exploration of Mars has never stopped. Mars has become the Earth we are familiar with.

People have been exploring Mars for a long time. The main reason why people are keen to explore Mars is that Mars is very close to the earth. The distance to the earth is about 55 million kilometers, and the farthest is not more than 400 million kilometers. Of course, the distance is not very important. Among them, from the perspective of the environment and size of Mars, it is very similar to the earth, so humans may develop another habitable planet, and Mars is the best choice.

Scientists say that the reason for Mars to look like this is the disappearance of Mars' magnetic field. After losing the magnetic field, Mars is completely exposed to radiation, and the impact of asteroids may be the reason for the disappearance of the magnetic field. According to media reports, scientists found that Mars was in the 40th century. There was an Earth-like magnetic field hundreds of millions of years ago, and then a major event occurred that wiped out the Martian magnetic field, leaving only a flat planet completely exposed to the sun's deadly radiation.

Although scientists have not found traces of life on Mars so far, it does not mean that there was no life on Mars a long time ago. Even though the environment on Mars today is very harsh, the atmosphere is very thin. This was not the case for Mars a long time ago, because during the exploration process, it was found that Mars once had oceans. Why do you say this?

The main reason is that a lot of water ice was discovered in the process of exploration. In addition, there are traces of water flow on the surface of Mars, so it is conceivable that Mars was full of life and life a long time ago.

But with the passage of time, the lava activity in the interior of Mars stopped, so that the magnetic field on Mars began to slowly disappear, and the atmosphere on Mars disappeared, and without the protection of the atmosphere, those life began to be affected. Radiation evaporation, it can be said that at the moment when there is no magnetic field, the environment of Mars changes very quickly.

Although we do not yet have the ability to know why the Martian magnetic field disappeared, once there was life on Mars, it means that there was a magnetic field. As long as it existed, there must be traces. Therefore, finding traces is an important part of Mars exploration. Scientists believe that there is life on Mars.

All in all, due to the existence of the earth's magnetic field, the better survival of human beings can be ensured. Therefore, according to the research and observation of scientists, there are signs of disappearance of the earth's magnetic field, but this process is extremely slow, so there is no need to worry.