How the sun is synthesized, how the sun is generated

Now the most authoritative statement is: in the early days of the formation of the solar system, more than 99% of the matter converged to the center to become the sun, and there are some scattered material fragments around the sun, after a long period of collision and gravitational action, the scattered fragments gradually converged into nine planets, but the earth at that time was just a chaotic material, and after hundreds of thousands of years, the material gradually cooled and solidified, forming the initial form of the earth, and then after hundreds of thousands of years, due to the gravitational effect of the earth, The gas produced by the chemical reaction in the earth is ejected and stored around the earth to form an atmosphere, and is synthesized into water by hydrogen and oxygen, and then through the energy radiation of the sun, the electric field, magnetic field and suitable living environment of the earth itself, organic matter is produced from the water, which is the ancestor ...... of all life

Between the stars, there is not nothing, but a mixture of gas, dust, or both. One of them, a low-temperature, non-luminous cloud of interstellar dust, is believed to be the basic material for the formation of stars. These dark interstellar dust clouds have very low temperatures, around -260 to -160 degrees Celsius.

Astronomers have discovered that if there is no external force for this kind of matter, these interstellar dust clouds are like clouds in the sky, floating in space for a long time. But if something happens, such as a nearby supernova**, the shock wave that passes through the interstellar dust cloud will compress it, increasing the density of the interstellar dust cloud to the point where it can continue to contract by its own gravity. This process of shrinking the volume by its own gravity is called "gravity collapse".

There are also other external forces, such as magnetism between galaxies or collisions between dust clouds, that can also cause interstellar clouds to cause gravitational collapse. About five billion years ago, an interstellar dust cloud called the "primordial solar nebula" began to collapse in gravity. As the volume shrinks, the temperature of the core increases, and the density increases.

When it shrinks by a million times and becomes a primordial star, the temperature in the core region also rises to about 10 million degrees Celsius. When the temperature of the core region of this primordial star or fetal star is 10 million degrees higher, the hydrogen fusion reaction is triggered, which is the reaction of the hydrogen bomb**. At this time, a star called the Sun was born.

According to research, the rapid collapse of a cloud of hydrogen molecules 100 million years ago formed a Taurus T star of the first generation of the first generation, that is, the Sun. The newborn star orbits in a near-circular orbit about 27,000 light-years from the center of the Milky Way.

The Sun has reached middle age in its main-sequence phase, during which the stellar nucleosynthesis reactions that occur inside its core fuse hydrogen into helium. At the core of the Sun, more than 4 million tons of matter can be converted into energy every second, generating neutrinos and solar radiation. At this rate, the Sun has so far converted about 100 Earth-mass matter into energy.

The time when the Sun is the main-sequence star lasts about 10 billion years. The mass of the Sun is not massive enough to explode into a supernova. In 5,06 billion years, when the Sun's hydrogen is depleted, the core is dominated by helium atoms, and the Sun will transform into a red giant, expanding its outer layers when the hydrogen in its core is depleted, causing the core to shrink and the temperature to rise.

When its core temperature rises to 100,000,000 K, helium will fuse to produce carbon, which will enter the asymptotic giant branch, and when all the helium in the Sun is converted to carbon, the Sun will no longer shine and become a dead star (Black Dwarf).