When will the sun go out and will the sun be destroyed?

Theoretically, our sun has 9 billion years of hydrogen fusion and 1 billion years of helium fusion, and the sun that is now in middle age still has 4 billion years of life, and after 4 billion years of helium fusion starts, a hotter sun will push out the outside solar wind, and the sun will expand millions of times as a result. Nuclear fusion energy runs out, and eventually the sun slowly shrinks into a white dwarf without disappearing.

In about 5 billion years, hydrogen fusion will run out, which means that the sun will go out.

I can't say for sure in 5 billion years!No one can say for sure!

Here's an answer for you!When nuclear energy is exhausted, it will perish!

The Wandering Earth fire in the first two years can be said to have opened a door to Chinese science fiction films. Of course, in addition to his box office, the most talked-about thing is the idea proposed in The Wandering Earth. If one day the sun comes to an end and everything in the solar system will be destroyed, will human beings be able to take the earth with them to wander to a new human home in the distance?

Of course, in the movie, relying on some engines, the plan of wandering the earth was finally realized, but if it is put into reality, can such a scene be realized?<>

First of all, let's talk about the ion engine mentioned in the blind balance movie, in fact, it sounds like the ion engine is very lofty, but in fact, it has already been developed by us. And it does burn more than 10 times more efficiently than our conventional engines, and the exhaust speed is close to 100 times. So that's why at the beginning of the Wandering Earth project, the ion engine was preferred as the core part.

But theoretically, although experts propose that the ion engine can make the object it carries reach a speed of 11 kilometers per second. But this is only theoretical, and it is also mentioned in the movie that a total of 10,000 such engines are used worldwide, generating 15 billion tons of thrust. It doesn't look like the Wisdom Ridge is huge, but do you know how much the Earth weighs?

Or do you know how much gravity the sun has on the earth?There is a full force of 150 trillion . There is still a 10,000-fold difference between the two sides, and this can only be achieved by increasing the number of new engines by a factor of 10,000, provided that the earth does not collapse under such circumstances.

Therefore, I can completely tell you that the thrust generated by the ion engine mentioned in the movie cannot shake the earth at all. And the deadliest link in the Wandering Earth plan is if the Earth escapes from the sun at such a speed. So how does the earth maintain its own ecological balance, you must know that the earth has been revolving around the sun according to the law of revolution and rotation before that.

Basically, everything is purified and grown under this influence. Leaving the Sun would be a fatal blow to all life on Earth, and the most noteworthy point is that the 2,000-year journey will lead to more disasters.

As a star, the sun also has its own life cycle, and when it enters its old age, it will eventually cool down and eventually extinguish due to the exhaustion of internal hydrogen, which is probably a slippery destruction.

The Sun will become a red giant in old age.

In its later years, the sun will deplete the hydrogen in its core, which is made up of cooler helium, surrounded by a layer of hydrogen fusion, and then surrounded by the sun's general substance. The light and heat produced by the hydrogen fusion reaction are exactly the same as the gravitational force of contraction. Due to the lower temperature of helium in the core region and the greater density of helium than hydrogen, the gravitational force is greater than the thermal expansion force and begins to contract, and the heat generated by the contraction of the core region spreads to the outer layer, coupled with the heat generated by the hydrogen fusion reaction in the outer layer, causing the outer part of the Sun to slowly expand, and the radius increases to the extent of engulfing Mercury.

With the expansion of the sun, the surface area of its luminescence and heat dissipation also increases, after the expansion of the surface area, the heat emitted per unit area is relatively reduced, so the sun expands, and the surface temperature also drops to 3,000 degrees Celsius

During the period of red giants, the Sun is unstable, and disturbances in the outer atmosphere will cause pulsating effects of expansion and contraction, and the period and volume of the pulsations are different. Think of jelly, pat the jelly and it will shake, and the bigger the jelly, the less it will shake. In the same way, the larger the size of a red giant, the longer the period of expansion and contraction.

Put simply, in five billion years, the heat of the contraction of the Sun's core will cause the exterior to expand into a red giant. The helium-filled core continues to shrink and the temperature increases. When the temperature of the core region rises to 100 million degrees, the helium fusion reaction begins, and the three heliums fuse into carbon after a series of nuclear reactions, releasing a greater amount of light and heat than the hydrogen fusion reaction, causing the outer layer of the sun to expand rapidly, and even the earth is engulfed, becoming a super-large red supergiant.

The end of the Sun: a white dwarf.

A similar process occurs again in the core region of the red supergiant, where more and more carbon accumulates, the density of carbon is greater than that of helium, and the relative contraction of gravity is also greater, and the core region composed of historical carbon shrinks. But when this region shrinks to a point where it is very tight and strong, that is, all the electrons around the carbon nucleus are squeezed together to the point where they can no longer be squeezed, this tight pressure blocks the gravitational contraction. Although the temperature at this time is much higher than 100 million degrees Celsius, it is not high enough to produce a carbon fusion reaction.

As a result, the core of the Sun no longer shrinks, but there is no excess heat to expand the outer layers, and so it stalemates, forming white dwarfs. Since the core of the white dwarf does not have a nuclear fusion reaction to supply light and heat, the entire planet becomes fainter and darker, and finally becomes a dead and silent planet --- black dwarf. After theoretical calculations, the process of white dwarfs slowly cooling down into black dwarfs is very long, more than 10 billion years, and the formation of the Milky Way is only more than 10 billion years old, so astronomers believe that the Milky Way is not old enough to form black dwarfs.

The Sun has about 10 billion years to live, and in its later years it will evolve into a red giant, expanding in size and reaching its current position as Jupiter. Therefore, as it expands, it first scorches and evaporates the earth.

Eventually, the Sun will collapse, either as a neutron star or as a black hole.

The current main-sequence phase of the Sun has been going through about 100 million years through computer simulations of stellar evolution and cosmochronological models. According to research, the rapid collapse of a cloud of hydrogen molecules 100 million years ago formed a Taurus T star of the first generation of the first generation, that is, the Sun. The newborn star orbits in a near-circular orbit about 27,000 light-years from the center of the Milky Way.

The Sun has reached middle age in its main-sequence phase, during which the stellar nucleosynthesis reactions that occur inside its core fuse hydrogen into helium. At the core of the Sun, more than 4 million tons of matter can be converted into energy every second, generating neutrinos and solar radiation. At this rate, the Sun has so far converted about 100 Earth-mass matter into energy.

The time when the Sun is the main-sequence star lasts about 10 billion years.

The mass of the Sun is not massive enough to explode into a supernova. In 5,06 billion years, when the Sun's hydrogen is depleted, the core is dominated by helium atoms, and the Sun will transform into a red giant, expanding its outer layers when the hydrogen in its core is depleted, causing the core to shrink and the temperature to rise. When its core temperature rises to 100,000,000 K, helium will fuse to produce carbon, which will enter the asymptotic giant branch, and when all the helium in the Sun is converted to carbon, the Sun will no longer shine and become a dead star (Black Dwarf).

The ultimate fate of the planet is not yet known. When the Sun becomes a red giant, its radius can exceed 1 AU, which is 260 times the current radius of the Earth beyond the Earth's current orbit. However, by then, as an asymptotic giant branch star, the Sun will lose about 30% of its current mass due to stellar winds, and the planet's orbit will be extrapolated.

For that reason alone, the Earth may be spared from being swallowed by the sun. However, new research suggests that the Earth will still be swallowed by the sun due to the effects of tidal action. Even if the Earth could escape the fate of being melted by the Sun, the water on Earth would evaporate and the atmosphere would escape.

In fact, even when the Sun is still a main-sequence star, it gradually becomes brighter and the surface temperature rises slowly. The rise in the sun's temperature will cause the Earth's surface to rise in 900 million years, making life as we know it impossible to survive. In another 1 billion years, the water on the Earth's surface will disappear completely.

After the red giant phase, the intense pulsations generated by the heat throw off the Sun's outer shell to form a planetary nebula. All that remains after losing its shell is the extremely hot stellar core, which will become a white dwarf, slowly cooling and dimming over a long period of time. This is typical of the evolution of low- and medium-mass stars [4].

will perish, in 5 billion years.

As far as I know, the sun will really die, about 5 billion years from now.

The sun is expanding, and the habitable zone of the solar system is constantly moving outward, so one day the solar system will no longer be suitable for life on earth.

The sun is currently in the main sequence stage, and there can be a stable combustion time of 5 billion years, after which the hydrogen in the inner core is exhausted and becomes a helium nucleus, and the hydrogen on the surface of the helium nucleus begins to burn, and the sun begins to expand, at this time the sun reaches the red giant stage, because the volume of the sun expansion is very large, it will exceed the earth's orbit, that is to say, the earth will be swallowed by the sun during the red giant period, if the earth is not destroyed by other external forces, then this is the end of the earth, about 5 billion years later.

About 1.1 billion years. According to the research of modern astronomy, the lifespan of stars similar to the size of the sun in the universe is generally about 10 billion years, and the sun has existed for 4.5 billion to 5 billion years. Writing this, many people will say that if there is a sun, there can be human beings, then the earth still has 5 billion years to live.

Actually, if you think simply, an elderly person must be completely healthy and free of diseases? No way. The same goes for the sun.

With the depletion of hydrogen, the sun will be more unstable in early old age, when no one can guarantee that the sun will not change suddenly; You must know that many small changes in the sun pose a great threat to human beings, such as sunspot eruptions, solar wind, magnetic storms, and so on. Therefore, it is accurate to calculate that human beings can still exist under the protection of the sun for about 1.1 billion years.

In 5 billion years, after the sun is completely depleted of hydrogen, the sun will expand first, and the boundary will be close to the earth, and it will completely engulf Mercury and Venus. At this time, the sun is called a red giant, and it is very hot, completely evaporating the water from the earth. Without water, life generally does not exist; Without water, the temperature of the earth is also very high.

The Sun then shrinks into a white dwarf. At this time, the temperature of the sun is very low, and the temperature of the earth will also be close to absolute zero. It is impossible for life to exist.

The sun will burn out in about 5 billion years, and if there is no external interference, the earth should have about the same life as the sun, and once the sun reaches the red giant stage, then the end of the earth will come. The first floor is not right, the sun is not expanding, but contracting, because it is nuclear fusion, which will eventually turn into a red giant or even a white dwarf.

If the Earth knows that there will be no planet collisions, about 8 billion years from now, the Sun will have about 8 billion years of hydrogen fusion and 2 billion years of helium fusion life, so the Sun will have about 10 billion years of life, and the Earth will not be that long, because the Sun will expand until it engulfs the Earth.

In 5 billion years, because the sun is now in middle age, the sun will also be old, and when it gets old, it will expand and become hotter, and the earth will be gone, and if we don't take care of the environment, it may be earlier.

The Earth is still a few hundred million years old, about 500 million years, and the Sun is 10 billion years old.