From the perspective of the history of the earth for billions of years, human beings appeared very late, and before the emergence of human beings, there were other species on the earth that ruled the earth, but these species eventually became extinct due to many factors. Of course, many of the so-called factors can be summed up in a word under the impact of natural forces.
Because of the extinction of previous species, human beings have a chance to develop. Humans are therefore the beneficiaries of previous extinctions. However, human beings have to worry about a new question: that is, will human beings not be able to resist the extinction of species brought about by natural forces?
Many people think that human beings are different from previous species: because human beings have intelligence and technology, so they do not have to worry about extinction. But in fact, this optimism is also blind: because the current maintenance of mankind is still largely dependent on luck. If luck is gone, humanity may be in danger.
For example, the Earth's magnetic field is currently down by 9%. For humanity, if this trend continues, humanity is likely to fall into extinction.
The inner core of the earth is scorching. During the operation of the thermal energy of the Earth's core, the Earth generates a magnetic field.
Originally, all the major bodies of the solar system were exposed to cosmic rays and solar wind radiation. For living beings, if they face these directly, they will inevitably not survive. Because of the magnetic field, both cosmic rays and solar wind are less harmful under the action of the magnetic field.
In addition, the presence of a magnetic field can also protect the stability of the atmosphere. If there is no atmosphere, the earth would be hellish: first, there is a difference of several hundred degrees Celsius between day and night - the temperature of the moon is 150 degrees Celsius during the day - you must know that the temperature of boiling water is 100 degrees Celsius (at standard air pressure), and the temperature at night is minus 180 degrees Celsius.
If the Earth were without an atmosphere, the temperature difference would be the same. With such a temperature difference, how should human beings and all things on the earth live?
Therefore, the earth can become the cradle of life and give birth to human beings, and the magnetic field has a great contribution. Without a magnetic field, it is impossible for humans to survive.
Even if the Earth is 150 degrees Celsius during the day, liquid water cannot be saved. At that time, mankind will not have to fantasize about landing on Mars. Because of the environment of the earth, at this time it is almost the same as Mars - the Martian of the earth.
The reasons for the current decline in the Earth's magnetic field are complex and there is more than one factor.
For example, volcanic activity has a great impact on the movement of the earth's core: because of volcanic eruptions and other geological activities, the movement of the earth's core is affected, and if the movement of the earth's core slows down, it is easy to cool, and cooling will easily cause the core to lower the temperature, and the core temperature will decrease, and the magnetic field will be affected.
In addition, fluctuations in the sun's magnetic field can also pose a hidden danger to the earth's magnetic field. The solar system is actually a whole, and if the magnetic field fluctuations brought by Jupiter's storms during special periods may affect the earth's magnetic field and cause natural disasters.
For the fluctuation of the earth's magnetic field, human beings cannot effectively intervene with the current technology. Therefore, if the earth does disappear due to some natural factors one day, all human beings can do is sit back and wait.
Of course, some people may say that humans can go to live on other planets. Please: With the current level of human technology and the environment of the solar system, even if humans plan to immigrate to other planets, where can they go?Moon?Or Mercury?None of this is realistic.
Therefore, human beings are still helpless about the problem of geomagnetism.