Why do stars shine and heat, isn t the universe burning without the help of oxygen?

Hehe, not all stars shine and heat, stars can shine and heat, a large part of those stars you see in the night sky are planets, and planets do not emit light, they only reflect the light emitted by the stars, for example, our moon, the moon itself does not shine or burn, he is so bright by reflecting the light of the sun. Then, not all combustion requires oxygen, and the star in space shines because it has a violent nuclear reaction on it, and the energy level of the electrons in the atom jumps to emit light and heat up, and it does not necessarily need the ...... of oxygen

The combustion reaction in the sun is a nuclear reaction in a physical reaction, not a chemical reaction, a chemical reaction is that the molecules are separable and the atoms are inseparable, while 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 mass converted into energy.

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.

First of all, it cannot be said that there is no oxygen in the universe. For example, there is a kind of red supergiant star in the universe, because of nuclear fusion, hydrogen will gradually fuse into heavy elements, which will form oxygen, and of course, iron will eventually be formed.

The "combustion" of the sun is also not an aerobic reaction in our usual sense, but a polymerization reaction. The hydrogen in the sun, including its three isotopes of deuterium, deuterium and tritium, under extreme high temperature and high pressure conditions, the nuclei of the atoms coalesce to form new nuclei, in this process, there is a loss of mass, according to Einstein's mass-mass-energy formula: e=mc2, this process will release a large amount of energy, this energy is mainly in the form of sunlight to release energy.

Our earth receives visible light, just like the sun is burning with flames, but it is just a way of releasing energy.

Most of the energy-containing substances on the earth, such as trees, coal, oil, etc., absorb solar energy, and photosynthesis is to absorb solar energy, and under certain conditions, for example, get an ignition point and burn it in the air. Most of the carbon and oxygen react to produce carbon dioxide, and black smoke is carbon dioxide. Animal burning is the burning of carbohydrates, no matter how bad these burnings are, they are only the re-release of solar energy, and the energy is insignificant, and this insignificant combustion is like a huge disaster for human beings.

The Earth is a planet composed of heavy elements, which are cosmic garbage produced by supernovae** and the burning and death of stars. Planets retain solar energy and absorb solar energy, and burn to release solar energy. The sun burns to release solar energy.

What is the sun? The sun is a star, not composed of heavy elements, it is a planet composed of hydrogen and helium atoms with a high density, constantly undergoing nuclear fusion combustion reactions, and its energy is the first of countless atomic bombs. Scientists have calculated how much energy the sun has, and a small solar flare is equivalent to 5 million atomic bombs**.

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The sun releases solar energy to the solar system.

A vibrant planet.

The sun is the nuclear fusion combustion that releases solar energy, and the burning on the earth is the combustion of carbohydrates with aerobic reactions, which is a violent change in the destruction of matter.

The sun is not burning in space, but is undergoing a nuclear fusion reaction, which is a physical reaction in which the nuclear fusion of hydrogen into helium and the release of a huge amount of energy at the same time, without the need for oxygen in the whole process.

We know that the reaction that requires oxygen is called a combustion reaction. In the combustion reaction, heat is released in the form of energy. In space, no oxygen is present, and no chemical reaction takes place with sun burns.

Hydrogen also combines with oxygen to form water. The energy released in the combustion reaction is observed as heat. But the combustion of the sun is not chemical combustion, but nuclear fusion.

The sun is considered to be a giant hydrogen bomb. In nuclear fusion, the nuclei of atoms fuse with each other to form larger nuclei. Nuclear fusion does not involve oxygen.

Yes, many, many, and the sun is also called a star.

A star is a spherical luminous plasma held together by gravity, and the Sun is the closest star to Earth.

Almost all of the other stars that can be seen on Earth at night are within the Milky Way, but due to their distance, these stars appear to be just fixed points of light.

Historically, the more prominent stars have been grouped into constellations and constellations, with the brightest stars having their own traditional names. Astronomers have assembled a catalog of stars that provides criteria for the naming of many different stars.

Magellan's galaxy.

The planet that shines and heats is full of the sun.

How the universe works, in fact, it doesn't have much to do with us ordinary people, because what we care about is how much money we can make a day now, how long we can rest in a month, and whether boys care about finding a beautiful wife and girls care about finding a rich and handsome person, which is indeed closely related to our real lifeThere is really no need to think about other things so much, and we still don't know how big the universe is.

The sun does not burn, but nuclear fusion, which is a kind of energy conversion, so it can shine even without oxygen.

In fact, the Sun is an internal thermal body, its powerful heat is emitted by internal nuclear fusion, which then transmits energy to the surface by convection and photons, and then reaches the Earth after more than 8 minutes.

The sun burns by its own nuclear fusion, because the sun is undergoing nuclear fusion all the time.

Combustion requires oxygen because a chemical reaction under this condition must occur to cause combustion, and a celestial body in the universe can generate heat because it can have electromagnetic waves, and that magnetic wave can produce huge energy.

Combustion is a redox reaction that requires both an oxidizing agent and a reducing agent, and oxygen can act as an oxidizing agent. The celestial bodies in the universe rub against the air, and rapid friction is easy to heat up.

Combustion is a violent chemical reaction with the participation of oxygen, and the combustion reaction can release heat, but the celestial bodies in the universe do not rely on combustion to release heat, stars like the sun release light and heat through continuous nuclear fusion reactions inside, and planets like the earth will also release geothermal energy because of the lava and other reasons inside.

The burning of the sun is not the combustion in our ordinary sense, but the result of hydrogen fusion in the core of the sun. Nuclear fusion is the energy released when the nuclei of atoms fuse, so oxygen is not required. The sun, like all stars, forms a continuous hydrogen fusion under the huge pressure and high temperature in the center, 600 million tons of hydrogen fusion into 100 million tons of helium per second, of which 4.2 million tons of matter are converted into energy, and this huge energy is gradually transferred from the center to the surface of the sun, and then radiates into space in the form of light and heat.

Combustion is a violent oxidation phenomenon that can only take place with the participation of oxygen. The heating of celestial bodies in the universe is not an oxidation phenomenon, but a more complex atomic reaction, the energy produced by nuclear fusion fission, and released.