Let s talk about what the sun burns.

The most common fuel used in solar combustion is hydrogen, but instead of ordinary hydroxide combustion, the sun uses hydrogen-hydrogen fusion to provide energy. Its combustion process does not require oxygen and is thousands of times more energetic than hydrogen and oxygen combustion. In the process of nuclear fusion, the sun releases a large amount of energy through the loss of mass, and this energy is released to make the sun shine.

Every second, the Sun loses about 4 million tons of mass due to nuclear fusion, and at its own enormous mass and at such a rate of consumption, the Sun has only consumed its mass in the last 5 billion years.

The sun is a star, our earth revolves around the sun, and the earth cannot do without the sun, but how does the sun burn? It is not burned by oxidation as we imagine, but by nuclear fusion, which means that atoms collide with atoms to form heavier atoms and energy, which is the part of energy that makes the sun shine and heat, and it keeps colliding, and when it collides with carbon atoms, the sun cannot continue to collide, because the pressure inside the sun can no longer continue to collide with carbon atoms.

The sun burns the heat of the inner nucleus.

The light and heat of the sun, which are not obtained by our usual chemical combustion, are produced by nuclear fusion reactions. The Sun is a gas planet. 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 and its mass is very large, and the pressure in the core of the Sun is very large. The center of the sun is the region of thermonuclear reactions. 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.

Very good conditions are provided for thermonuclear reactions. Through thermonuclear fusion, the sun burns its own hydrogen, and the two hydrogens form a helium through thermonuclear reaction, and a certain mass loss occurs, and the lost mass is radiated in the form of energy.

The sun's light and heat come from fusion reactions in the core region, which are not the combustion reactions we are familiar with. The essence of combustion is that combustibles react chemically with oxidants and release light and heat at the same time. No new elements are produced during combustion, only the elements are recombined into other forms of compounds.

For example, charcoal is burned in the air, and its essence is that carbon elements and oxygen are oxidized to produce carbon dioxide.

About three-quarters of the sun's mass is made up of hydrogen, the rest is almost all helium, and the rest is less than 2% heavy. Its energy** is in its core, which is less than 500,000 kilometers in diameter, with temperatures of up to 15 million degrees Celsius and extreme pressure. Under such high-temperature and high-pressure conditions, nuclear fusion reactions are produced, and the sun uses nuclear fusion to release light and heat into space.

The fuel burned by the sun is hydrogen, which includes three isotopes of hydrogen: deuterium, deuterium, and tritium; And the combustion process does not require combustibles. Inside the star, a nuclear fusion reaction is carried out, and the hydrogen bomb is made using the same principle, and among the average nucleon binding energies of atoms, the average binding energy of hydrogen is the lowest, and the average binding energy of iron-56 is the highest.

As a result, when hydrogen is fused into heavier elements, there will be a significant mass loss, because the speed of light in the mass-energy equation is a very large number, so the energy released by nuclear fusion is huge, and the energy of the sun is ** here.

The fuel burned by the sun is hydrogen, which undergoes a series of changes at high temperature and high pressure to form helium, and in the process there is a certain mass loss, and the lost mass is emitted in the form of light and heat. One of the 2.2 billion of the energy is irradiated to the earth, and it is this 2.2 billion part of the energy that drives the atmosphere and ocean currents on the earth, promotes the growth of animals and plants, and gives birth to all things on the earth.

Question 1: Why does the sun burn all the time, what materials does it burn, and does it need oxygen? If there is no oxygen, what does it rely on to shine! The combustion of the sun is a nuclear reaction.

First of all, hydrogen in stars does not exist in the form of hydrogen, but is completely ionized at high temperatures, which is the plasma state.

Secondly, the combustion reaction in a star is a nuclear reaction in a physical reaction, not a chemical reaction, a chemical reaction is that the molecules are separable, the atoms are inseparable, and the nuclear physical reaction is that even the atoms are broken. Hydrogen in the star In a high-temperature and high-pressure environment, four hydrogen atoms undergo a series of nuclear fusion reactions to form a helium nucleus. Nuclear fusion has 4% of its mass converted into energy.

Nuclear fission is 1%.）

Thirdly, even combustion in a chemical reaction does not necessarily require oxygen. The conditions for combustion are: combustibles, combustibles (not oxygen), and the temperature reaches the ignition point.

In addition to oxygen (O2), there are fluorine gas (F2), chlorine (Cl2), ozone (O3), etc., and compounds such as hydrogen peroxide (H2O2), nitrogen tetroxide (N2O4), oxygen difluoride (O2), nitric acid (Hno3), etc. In addition, when it reacts with extremely reactive substances such as sodium and potassium, nitrogen (N2) and carbon dioxide (CO2) can also support combustion.

The sun is not burning, it is a fusion reaction under the strong gravitational pull of the inner core, which fuses hydrogen into helium and releases energy. Nuclear fusion reactions do not require gases for auxiliary combustion, and nuclear fusion requires the reaction to take place at sufficient temperature and pressure. What happens on the sun is a hydrogen-helium fusion reaction, the principle is the same as that of a hydrogen bomb**, it requires hundreds of millions of degrees of high temperature.

Both deuterium and tritium are isotopes of hydrogen. Under certain conditions, their nuclei can collide with each other and merge into a heavier nucleus, the helium nucleus, and at the same time release the huge energy stored in the nucleus (nuclear energy). The deuterium-tritium reaction can release 17.8 million electron volts.

It is calculated that 1 kilogram of deuterium fuel can be worth at least 4 kilograms of uranium fuel or 10,000 tons of high-quality coal fuel.

The Sun is the only star in the Solar System, and our Earth Globe is just one of the planets in the Solar System that orbits the Sun. The sun is a body that can shine and heat on its own.

Because there will be a lot of nuclear fusion on the sun, which will produce a certain amount of heat and combustion, and there will also be a lot of carbon monoxide.

Because the sun has a nuclear fusion reaction, it releases light energy and heat energy, so the sun burns.