How long can the sun keep burning?

Anyway, you and I can't see the sun go out, focus on interesting questions. Thank you.

There are 116 billion trillion tons of hydrogen on the sun, and the sun burns 100 million tons of hydrogen every second, and it is estimated that it can burn hydrogen for 50-6 billion years.

In 50-6 billion years, the sun will bring great disasters to the earth.

But don't worry, in 5 billion years, we will already live on other planets.

If you go back in the history of the sun, the sun has burned for 4.6 billion to 51 years, because the sun is the entire solar system.

At the beginning of the formation,The sun was unstable in the first days of formation, so it is said to be between 4.6 billion and 51 years, because the earth was formed 4.6 billion years ago. <>

The sun can be traced back to 5 billion years ago, almost 5 billion years ago, the universe continued to spread to the peripheral chaotic stars, and then led to the small galaxy where the solar system is located.

There is also a gradual change. More than 98% of the mass in the solar system is concentrated in the body of the sun, and then the sun reacts in this physical as well as chemical.

As well as some inexplicable ** reactions, it gradually gathers together, its own density is large to a certain extent, its mass is large to a certain extent, and its own gravitational attraction is very strongThen it emits light and heats up, gradually forming the core of a small galaxy, which is a star. <>

After the formation of the sun, it took about 400 million years or so to gradually create the earth, but at the beginning of the earth's birth, it was impossible to have life in those years, because there was no oxygen when the earth was first born. The surface of the earth is all burning magma-like things, because when the earth was just formed, the structure was still very unstable, after about hundreds of millions of years of cooling time, the earth gradually calmed down, and then after more than ten years, the earth gradually appeared some of its own chemical reactionsThere were some plants that could produce oxygen, and after more than ten years, the earth gradually had living organisms, and it was still a simple single-celled organism. <>

So the history of the sun itself can be traced back to 5 billion years ago, and the life span of the sun is about 51 years, that is, the sun can burn for almost 10 billion years, and the lifespan of a normal star should be like this, at least the size of the sun. It's just that we can't ** at that time, if we can survive until that time, then we may already have the belief to escape from the sunThis is the time to fleeMilky WayBut if we don't survive that time, it doesn't matter to us.

The sun has been burning for billions of years now, and it can still burn hundreds of millions of years, and the life span of the sun is still very long.

The sun has been burning for 5 billion years, and the life span of the sun is 100 to 12 billion years, but in another 1.5 billion years, hydrogen inside the sun will become very rare.

The sun has been burning for 4.6 billion years, and according to experts' estimates, it will probably be able to burn for about 5 billion years.

It has been burned for 4.6 billion years, and according to the relevant scientists, it can be burned for at least a billion years.

The sun has been burning for 360,000 years, and according to scientific calculations, it can still be used by the earth for billions of years.

A thermonuclear reaction from hydrogen fusion to helium is combusted.

The temperature of the sun's core, which reaches 15 million, is extremely high, and the pressure is also enormous, allowing the thermonuclear reaction from hydrogen fusion to helium to take place, thus releasing enormous amounts of energy. This energy is then transmitted through the radiation layer and the troposphere to the bottom of the sun's photosphere, through which it radiates outward. The density of matter in the central region of the Sun is very high.

Up to one hundred and fifty 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.

Why the sun burns.

Because the composition of the sun is almost the same as that of the earth, the difference is that the proportion of different elements is different, the main elements on the sun are about 70% hydrogen and 20% helium and 10% of other elements, from an astronomical point of view, the sun is a dwarf star, its central temperature is 15 million kelvin, the surface temperature is 6000k, and its energy ** is a nuclear reaction of hydrogen fusion into helium, Energy, as well as light, travel about 10 million years under the Sun's enormous gravitational pull to cross the Sun's 700,000-kilometer radius and rise to the surface. Although the sun currently has to completely convert 4,000,000 tons of its own matter into energy per second, this is still very small compared to its huge mass, but even so, as a star, when its internal hydrogen is reduced by more than 20%, the star will appear obviously old, and the center will begin to form a hotter core dominated by helium fusion, and this core will push out the outer material, so that the sun will evolve into a red giant, and the sun at that time is presumed to have a radius of Mars's orbit. All planets that are relatively close to the Sun will cease to exist, after which the Sun will evolve into a white dwarf star when the energy is exhausted, a star about the size of the Earth, but with a density of several tons per cubic centimeter, and eventually disappear into the universe in about 10 billion years, including about 9 billion years of hydrogen fusion and 1 billion years of helium fusion.

The size of the sun is not enough for the nuclear reaction to continue, and usually stars with a mass greater than 8 times the sun will collapse at the end of the day because of the appearance of an iron core that cannot produce energy in the center, and the whole as a nuclear bomb will be incredibly large**, which is a nova or supernova, and then their core will become a neutron star or even a miracle of gravity - a black hole. But usually the lifespan of big stars is only tens of millions to millions of years, which is definitely inferior to our sun!

Why does the sun burn all the time?

I think you can consider the conditions of combustion, combustibles, temperature, and there seems to be no oxygen, so it shouldn't be called combustion, maybe.

So, as the upstairs said, there was nuclear fusion. Nuclear fusion is going to release a huge amount of energy, and there will be heat.

Why is the universe a vacuum, and the sun can still burn.

To your question, I would like to ask you rhetorically, the universe is vacuum, so why is there air on the earth? The reality is that the sun does not need air to burn, and the sun relies on thermonuclear fusion reactions to produce huge amounts of heat.