A large number of celestial bodies in the universe have magnetic fields. Why is the universe not neutral?

Almost every entity in the universe has a magnetic field. Planets and stars can generate current through their internal structures, and then generate magnetic fields. The earth relies on the core to melt the metal, generates current through the liquid metal, and then a magnetic field appears. On a larger scale, nebulae, galaxies and galaxy clusters in the universe also have complex charged particle flows, which in turn generate magnetic fields.

If you want to generate a magnetic field, you need charged particles to move, and the early universe belongs to electric neutrality. If we want to popularize the cosmic magnetic field, the universe needs to generate the first magnetic field and enlarge it continuously. So where is the source of the cosmic magnetic field?

Cosmic strings "magnetized" the universe at the early stage of its formation: magnetic fields can appear in every corner of the universe, indicating that the first magnetic field of the universe must be very strong and appear in the early stage of the universe, thus affecting the whole universe. Astronomers believe that the main reason for the magnetic field in the universe is the influence of cosmic strings in the early universe.

Cosmic string is the theoretical product of the early universe. Cosmic strings appear less than 1 second after the birth of our universe. Cosmic string is simply a "fold" in space, but it only exists in one-dimensional space.

Astronomers believe that the four basic forces in the early universe are unified. With the evolution and expansion of the universe, the four basic forces gradually decompose, forming unique gravity, strong interaction, weak interaction and electromagnetic force.

When the four basic forces are gradually decomposed, the basic physical laws of the universe will change again, and it is difficult to carry out this process perfectly. With the emergence of fundamental forces, the laws of space-time physics are reconfigured, and there are defects and folds in space, which is the cosmic string.

Cosmic strings will gradually spread with the expansion of the universe after they are born. When the cosmic string passes through the plasma, it will change the temperature and density of the plasma, causing the charge in the plasma to move and produce the first magnetic field in the universe.

Because the influence of cosmic strings is limited, the magnetic field generated by cosmic strings is less than one millionth of the earth's magnetic field, but cosmic strings can affect a large number of plasmas, which are gradually compressed by gravity, and the magnetic field will gradually reach the same size as the earth's magnetic field.

Cosmic strings magnetized the universe in the early days of the universe, and with the evolution and development of the universe, a cosmic magnetic field was gradually formed all over the physical objects.

Do cosmic strings really exist? Cosmic string theory was put forward in the 20th century. With the development of cosmic string theory, astronomers put forward the theory that cosmic string magnetizes the universe. But so far, astronomers have not really detected cosmic strings, and all the search observations have found nothing.

Like many advanced theories, the theoretical basis of cosmic strings is based on multi-dimensional space, and cosmic strings belong to low-dimensional space folds.

According to the current space theory, we are in a three-dimensional space, and it may be difficult to observe low-dimensional things, but astronomers put forward the observation characteristics of cosmic strings according to the theory that cosmic strings magnetize the universe.

Cosmic strings can affect the internal charge when they pass through plasma, and this effect will last for a long time. Even if you can't see the cosmic string, you can judge whether it exists by the characteristics that appear inside the plasma.

At present, astronomers hope to find clues to cosmic strings through the next generation of gravitational wave detectors. If astronomers can find the cosmic strings that existed in the early universe, humans may be able to further understand the mystery of the origin of the universe and the reasons for the emergence of the cosmic magnetic field.

Do you think the mysterious cosmic string is the cause of the cosmic magnetic field?