Why is the sun so hot, why is the sun so hot

Yang is a fiery gas planet that shines on its own. The temperature on its surface is about 6,000 degrees Celsius, and the core temperature is as high as 15 million degrees Celsius. The radius of the Sun is about 696,000 kilometers, which is about 109 times the radius of the Earth.

Its mass is tons, which is about 332,000 times that of the Earth. The average density of the Sun is grams per cubic centimeter, which is about 1 4 of the density of the Earth. The average distance between the Sun and our Earth is about 100 million kilometers.

The structure of the sun is mainly divided from the inside to the outside: the center is the thermonuclear reaction zone, the core is the radiation layer, the radiation layer is the troposphere, and the troposphere is the solar atmosphere outside the troposphere.

According to the theory of nuclear physics, the center of the sun is a thermonuclear reaction zone. The central region of the Sun occupies 1 4 of the entire radius of the Sun and is more than half of the mass of the entire Sun. This indicates that the density of matter in the central region of the Sun is very high.

Up to 160 grams per cubic centimeter. Under the attraction of the sun's own strong gravity, the central region of the sun is in a state of high density, high temperature and high pressure. It is the birthplace of the sun's immense energy.

The energy generated in the central region of the Sun is mainly transmitted in the form of radiation. Beyond the central region of the sun is the radiant layer, which extends from the radius of the sun at the top of the thermonuclear center to the radius of the sun, where the temperature, density, and pressure decrease from the inside out. In terms of volume, the radiant layer accounts for the vast majority of the total volume of the Sun.

Through thermonuclear fusion, the sun emits light by burning large amounts of hydrogen concentrated at its core, consuming an average of 6 million tons of hydrogen per second. After another 5 billion years, the Sun will deplete its hydrogen reserves, and then the nuclear region will shrink and the nuclear reaction will expand to the outside, where its temperature can reach more than 100 million degrees, leading to helium fusion.

Because nuclear fusion is taking place all the time inside the sun, releasing a lot of light and heat.

The cause of solar heat is that a large amount of hydrogen elements are gathered together, and due to the action of gravity, a high temperature is generated inside, triggering nuclear fusion, that is, hydrogen fusion into helium. Nuclear fusion will release a lot of energy, light from the core of the sun to the surface, it takes 10 million years, about 4 billion years later, the sun produces helium fusion, there will be a certain collapse, because the sun is not a big star, the pressure caused by gravity will not make the fusion continue, the sun collapses into a white dwarf. Reduced in size, but still massive and still able to control other celestial bodies in the solar system.

The Sun is the central body of the solar system and occupies the overall mass of the solar system. The eight planets in the solar system, asteroids, meteors, comets, outer Neptune objects, and interstellar dust all revolve around the Sun, which revolves around the center of the Milky Way. The Sun is a star located at the center of the solar system, and it is almost an ideal sphere intertwined with hot plasma and magnetic fields.

The Sun is a yellow dwarf (spectrum G2V), the lifespan of a yellow dwarf is roughly 10 billion years, and the Sun is currently about 100 million years old.

The reason for <> solar heat is that a large number of hydrogen elements gather together, and due to the action of gravity, high temperatures are generated inside, triggering nuclear fusion, that is, hydrogen fusion into helium, and nuclear fusion will release a large amount of energy and volatilize through various activities of the sun.