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Every morning we are greeted by a ray of sunshine, which makes our daily life full of motivation, and the sun has become an indispensable necessity for us in this world. If there were no sun, the earth would be in darkness and much life would be depleted, enough to see how important the sun is to us. Today we will talk about the sun has been burning for 4.5 billion years, why it has not burned out, so how long will the sun continue to burn?
The light and heat that the sun brings to us is the source of our life, and the sun has been in this world for more than 4.5 billion years, and the sun formed about 100 million years ago in a cloud of collapsed hydrogen molecules, it is a huge, hot gas planet. In fact, the Sun is just a very ordinary star in the universe, but it is the central object in the solar system. In the solar system, the eight planets, including our earth, orbit the sun under the strong gravitational pull of the sun.
Among them, thermonuclear fusion is the main reason why the sun can maintain radiant heat energy for a long time, the sun is a yellow dwarf, and the life span of the yellow dwarf is about 10 billion years, that is to say, the sun has been burning for 4.5 billion years, and after about 50 to 6 billion years, the hydrogen element inside the sun will be almost completely consumed, and then the core of the sun will collapse, resulting in a rise in temperature, and this process will continue until the sun begins to fuse helium into carbon.
Slowly, the outer layers of the Sun will begin to expand, and then a portion of the outer atmosphere will be released into space, and the mass of the Sun will become less and less common as new elements are transformed, and some planets will become farther and farther away from the Sun. And because the Sun doesn't have enough mass to explode into a supernova, instead, it will enter the red giant phase in about 5 billion years.
When the Sun becomes a red giant, the fate of the Earth is uncertain, because at that time the Sun will expand, and the surface will most likely expand to the Earth's current orbit. There are also new studies that suggest that the Earth may have been swallowed up by the sun at that time due to the interaction of the tides. But even if the Earth finally escapes being burned by the sun, the water on Earth will still boil and most of the gas will escape into space.
But for us, there is no need to worry at all, because the sun will continue to burn for another 5 billion years, and it is not certain whether human beings will exist at that time!
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The sun will definitely not stop in our lifetimes.
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This science can't explain it yet, let's see how it develops in the future.
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No one should be able to say clearly.
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Although the life span of the sun has been measured, it is not certain.
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Don't worry, you'll definitely live longer than you and me so far.
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No one will be able to say exactly how long it will be.
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Scientists have not speculated on the exact year.
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No one can know how long solar energy burns.
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This is a long time coming, and we can't accurately deduce it.
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The formation of the Sun is the same as that of the nine planets of the Solar System. The nine planets originally had their own vortices, which evolved into particle vortices formed by the driving forces of cold contraction and expansion. Then, under the action of gravity, it evolves from particle vortex to atomic vortex, from atomic vortex to molecular vortex, from molecular vortex to material dust and mass vortex, and finally condenses into planets.
The formation of the Sun has both similarities and differences with the formation of the Nine Planets.
The sun is the power source for the growth of everything on earth. Without the sun, everything on earth would perish. This is mainly because the sun is releasing a huge amount of energy all the time.
But what about where the sun's energy comes from? If the shrinkage of the sun is the main reason for the release of the sun's energy, then the sun will shrink by half in 140,000 years. But this does not correspond to the facts and is impossible.
Therefore, the contraction of the sun cannot solve the mystery of solar energy. Scientists are still figuring out what the sun's energy is. But for those who believe in the Creator, this mystery does not exist, because everything in the universe was originally created and nurtured by the Creator, and all the energy comes from the Creator.
We all know that coal burns to produce heat, so some people believe that the sun releases energy by burning substances such as coal. However, although coal combustion produces heat, the quality of the coal decreases accordingly. If the sun really relied on it to sustain energy radiation, then the mass of the sun would be much greater than it is now.
Therefore, this assumption is not at all reliable.
With the rapid development of science and technology, the leap in scientific theories and detection technology, especially the establishment of knowledge of microparticle energy systems, people have realized the existence of nuclear energy. Therefore, scientists believe that the reason why the sun can shine for a long time must contain nuclear fuel inside. It is now widely believed that nuclear fusion takes place at the high temperature and pressure of the sun, where every four hydrogen atoms combine to form a helium nucleus.
During nuclear fusion, the sun loses some mass and releases a lot of energy. It is this energy that makes the sun shine.
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Because the sun is burning all the time, there is nuclear fusion, so it can produce a huge amount of energy, and the volume of the sun is also relatively large, so this situation occurs.
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It is because the sun is constantly fissioning that it produces such a huge amount of energy, and these energies will cause very serious damage to the human body.
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Nuclear fission and nuclear fusion are always taking place inside the sun, so there is a lot of energy, which is inexhaustible.
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Because the sun is burning and releasing all the time, it is very large, and it is also releasing heat, so this is the case.
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It may be that there are some nuclei on the sun, and when the nuclei have a fusion reaction, a large amount of energy will be released.
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The energy on the sun comes from the nuclear fusion reaction inside.
The Sun is the central body of the solar system and occupies the overall mass of the solar system. Of the mass of the Sun, most of it is the number one element in the periodic table and the lightest element, hydrogen. Under the high temperature, high pressure, and high density of the sun's interior, the hydrogen on the sun can undergo nuclear fusion reactions and release huge amounts of energy.
The nuclear fusion reaction process of hydrogen is shown in the figure below.
Two hydrogen nuclei (protons) collide to produce a neutrino and a positron, creating a heavy hydrogen nucleus. This heavy hydrogen nucleus collides with a proton to produce a photon, creating a helium-3 nucleus. Then two helium-3 cores collide, producing a helium-4 core that releases two protons at the same time.
Two of the positrons then annihilate with the electrons, resulting in two photons. The total reaction is that four protons produce a helium-4 nucleus, two neutrinos and four photons, and two other electrons participate.
Since the sum of the masses of the four hydrogen nuclei is greater than the mass of one helium-4 nucleus, this extra mass is converted into energy according to Einstein's e mc 2 and emitted mainly in the form of photons.
On the Sun, intense nuclear fusion reactions are taking place every moment, and 4 million tons of matter are converted into energy every second. At this rate of consumption, the sun can continue to burn for another 5 billion years.
Although only a tiny fraction of the solar energy can be received on the earth, it is enough to ensure the temperature of the earth and the growth of all things.
For a week, because the sun is the main heat of the earth, after losing the sun, humans will soon freeze to death.
Press"Nebula said"The sun and the earth evolved from the same nebula, the nebula evolved into the sun at the beginning, and the remaining nebulae evolved into nine planets, at the beginning the earth did not have any life, if there was no sun, there was no ultraviolet rays, and the most basic bacterial life could not be constructed, green plants could not photosynthesize, release oxygen, and life could not live.
Because after a billion years, the sun will become very irritable, which will cause great changes in the earth's environment, so human beings will only have a billion years.
The solar system is a system of celestial bodies made up of the Sun and the celestial bodies that orbit it under its gravitational pull. It includes the Sun, the eight planets and their moons, dwarf planets, asteroids, comets, meteoroids, and interstellar matter. The celestial bodies in the solar system are mainly composed of gases such as hydrogen, helium, and neon, ice (water, ammonia, methane), and rocks containing elements such as iron, silicon, and magnesium. >>>More
The volume of the Sun is about 10 18 cubic kilometers (1,300,000 times that of the Earth) and its mass is about kilograms (333,400 times that of the Earth). >>>More