The sun has a few more years to live 20 and the sun has a few more years to live

10 billion years, 5 billion years later, evolved into red giants, and then into white dwarfs, which ate the Earth during the red giant period.

It depends on when the sun is no longer the sun.

After about 700 million years, the sun's radiation is no longer more than the life on Earth can withstand.

After evolving into a red giant star and eventually becoming a white dwarf, the sun is still not the sun@bug but a few hundred million years later.

It's too early to worry

50000000000 years.

Red Giant - Superred Giant - White Dwarf - Black Dwarf (no brightness at all).

After 5 billion years, it evolved into a red giant star and then a white dwarf.

At least 1000 trillion years, up to 100 trillion trillion years.

Not years, hundreds of millions of years!! Yes; I suggest you still buy a book to read, 100,000 why]?

Longer than we have ever lived.

You and I won't see that day anyway.

The sun has 50-6 billion years to live. The Sun is a yellow dwarf star with a lifespan of about 10 billion years, and the Sun is currently about 100 million years old, and in about 50-6 billion years, after the Sun has exhausted all its hydrogen elements, the core of the Sun will collapse, causing the temperature to rise, and this process will continue until the Sun fuses helium into carbon.

The Sun does not have enough mass to explode into a supernova, and instead, in about 5 billion years it will enter the phase of a red giant, with the helium core contracting to resist gravity and heating at the same time; The hydrogen cladding immediately adjacent to the core accelerates fusion as the temperature rises, and as a result, the heat generated continues to increase, conducting it to the outer layer, causing it to expand outward.

The structure of the sun:

According to the relative intensity of solar activity, the sun can be divided into two categories: the quiet sun and the active sun. The Tranquility Sun is a theoretically assumed spherically symmetrical hot gas sphere whose properties vary only with radius and are uniform in either sphere, with the aim of studying the general structure and general properties of the Sun.

Under this assumption, the Sun is composed of a core, a radiation region, a troposphere, a photosphere, a chromosphere, and a corona, in order from the inside out. Below the photosphere is called the interior of the Sun; Above the photosphere is called the solar atmosphere.

Scientists estimate that the life span of the sun is about 10 billion years, based on theoretical models. At present, the sun is about 4.6 billion years old, and is in a healthy middle age state, with more than 500 million years left in its remaining life.

The sun burns in three phases, which add up to about 9 billion years, and then the sun will remain silent forever in the universe.

The solar composition is mainly composed of hydrogen. Under the gravitational squeeze generated by a large amount of hydrogen, a small area of the sun's inner core has been undergoing nuclear fusion reactions, and the solar inner core fuses more than 600 million tons of hydrogen into helium every second, accompanied by the release of a large amount of energy, equivalent to the energy produced by 1 billion atomic bombs** per second. Today, the fusion reaction of solar hydrogen has been going on for 4.5 billion years, and the remaining hydrogen fuel can last for another 5 billion years.

5 billion years.

The sun has 5 billion years to live! The following is a detailed analysis, if you are satisfied, please adopt my answer, thank you. The Sun is a yellow dwarf, and the lifespan of a yellow dwarf is roughly 10 billion years, and the Sun is currently about 5 billion years old.

4.6 billion years on Earth). Within about 5 billion years, the Sun's interior will be almost completely depleted of hydrogen, and the Sun's core will collapse, causing the temperature to rise, a process that will continue until the Sun begins to fuse helium into carbon. ”

The Sun is nearly 5 billion years old today. We know that the sun shines and heats up by burning a large amount of hydrogen concentrated at its core, and it consumes an average of 6 million tons of hydrogen per second. The hydrogen stored in the sun can still be used by the sun to continue burning like this for 5 billion years, so what will happen to the sun in 5 billion years?

By that time, the temperature of the sun can reach more than 100 million degrees Celsius, and its interior will cause helium fusion to occur. The Sun will soon expand dramatically, entering the so-called "red giant" phase. It will be 100 times brighter than it is today, and it will swallow up the nearest planets such as Mercury and Venus.

The Earth will also get hotter and hotter, and it will even be engulfed by the extremely expanding sun. At that time, life on Earth will no longer be able to survive. Over time, the Sun will deplete all of its nuclear fuel faster and faster, entering the "waning years" and gradually collapsing into a faint white dwarf.

Finally, under the action of gravity, the sun contracted again, becoming a brown dwarf star with no light and no heat, and disappeared into the vast depths of the universe, ending its glorious and ordinary life. By the time the sun died, the earth had long since ceased to exist. By then, humanity with a high degree of civilization may have already built its own beautiful new home in another part of the galaxy through interstellar voyages.

The age and lifespan of the sun.

The sun continuously radiates energy into space in the form of electromagnetic waves. This energy is released by the fusion of four hydrogen nuclei into a helium nucleus under high temperature and high pressure. We know that the atomic weight of a hydrogen nucleus is, the atomic weight of a helium nucleus is, and the mass of 4 hydrogen nuclei should be.

When 4 hydrogen nuclei fuse into 1 helium nucleus, a unit of mass is lost, of which, 1 gram of hydrogen nuclei is fused into a helium nucleus. This means that solar energy is produced at the cost of consuming mass, and this mass is converted into solar radiation and no longer belongs to the sun. The sun loses about 4 million tons of mass per second, which is simply too small for a huge solar mass.

In the 5 billion years since the birth of the sun, the sun has consumed only mass, and even in another 5 billion years, it will only consume the mass of the sun. But the question is, no matter how massive the sun is, it is still limited, and how long can the sun last for life? What is the impact on the planet?

The life of the sun begins from the nebula, and finally until the red giant, the white dwarf, becomes the dead remains of the sun, this process will take about 10 billion years, that is to say, another 5 billion years will be the death period of the sun, and the earth we live in will be swallowed by the sun when it becomes an expanding red giant. If we humans could survive to that time, we would have to fly to other planets to live.

The life of the sun.

When the Sun's interior is mostly helium, the temperature at its center increases by 10 times as much as it is now.

Excessive expansion of its surface will turn from high temperature white to low temperature red, becoming a "red giant".

Solar activity has ended when electrons and nucleons become a dense mixture with no regular structure.

It is estimated that in another 5 billion years, most of the sun's hydrogen will coalesce into heavier helium, which requires a higher temperature to polymerize into carbon, due to its heavier gravitational pull.

The life of the sun.

When the pressure of the gas increases, according to the law of gas, the temperature will automatically increase, when the sun is mostly helium, its central temperature will increase by 10 times to the present, and when it reaches 100 million degrees, helium will polymerize into heavier carbon, and then the carbon will be polymerized into nitrogen due to the gravitational pull that will produce a higher temperature. This repeats progressively to heavier substances such as oxygen, all the way to iron, and at high temperatures, all matter becomes gases.

When the sun's helium begins to coalesce, it will become a giant helium atomic bomb, expanding its diameter by more than 100 times. Due to excessive expansion, its surface temperature will decrease, causing the color of the sun's surface to change from the current high-temperature white to low-temperature red, becoming a "red giant".

For example, if a star has the same mass as the Sun, the atoms will merge into heavier matter in order until iron, and the energy consumed to coalesce into iron is equivalent to the energy produced, so there is no superfluous energy. As soon as the sun has no heat**, it begins to cool and shrink, and at the end it puts a high pressure on the center of the sun. It is so high that the outer electronic shell of the atom is crushed, so that the electrons no longer rotate outside the nucleon, and the electrons and nucleons become a high-density mixture with no regular structure, and then the sun becomes a "white dwarf", which gradually cools and dims, and becomes a "black dwarf".

At this point, the sun's activity is completely over.

The lifetime of the sun and stars is determined by their size (mass) and is also related to their elemental composition.

Our sun has been engaged in hydrogen fusion for 5 billion years, and another 4 billion years will begin, and then helium fusion will begin, at which point the sun will expand to engulf the Earth and become a red giant.

In another 1 billion years, the Sun will end its life as a star and become a dwarf.

Theoretically, the accumulated helium can be taken away to prolong the life of the sun and hydrogen. But that's not possible.

If you rush to add other small stars to him, it will only cause a very great pressure on his center, but it will hasten its demise, and the pressure to collapse will be even greater.

Scientists now calculate that the sun has about 5 billion years left to live. So far, the Sun has passed half of its lifespan, and in about 1 billion years, the Sun may evolve into a red giant, when the Sun is too large and the Earth will lack water and there may be no life on Earth.

Yellow dwarfs have a lifespan of about 10 billion years, and the Sun is currently about 100 million years old. In about 50 to 6 billion years, the Sun's interior will be almost completely depleted of hydrogen and the Sun's core will collapse, causing the temperature to rise, a process that will continue until the Sun begins to fuse helium into carbon.

Although helium fusion produces less energy than hydrogen fusion, it is also hotter, so the outer layers of the sun will expand and release a portion of the outer atmosphere into space.