How long does the sun live? What is the life span of the sun?

How long does the sun have to live?

The sun has survived for 5 billion years, and there are 5 billion years left to enter the red giant stage, so it has a lifespan of 10 billion years.

5 billion years, of course, when the sun evolved into a red giant, we were long gone.

The life span of the sun is about 10 billion years.

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.

Knowledge about the sun:

The Sun is the central body of the solar system and occupies the overall mass of the solar system. The eight planets in the solar system, asteroids, meteors, comets, outer Neptune objects, and interstellar dust all revolve around the Sun, which revolves around the center of the Milky Way.

The Sun is a star located at the center of the solar system, and it is almost an ideal sphere intertwined with hot plasma and magnetic fields. The diameter of the Sun is about 1,392,000 (kilometers, equivalent to 109 times the diameter of the Earth; It is about 1.3 million times the size of the Earth; Its mass is about 2 10 kilograms (330,000 times that of the Earth).

10 billion years or so.

So far, the sun is only halfway through its life, so humans can continue to live for more than 5 billion years.

However, the hydrogen inside the core of the star, the fuel for thermonuclear reactions, will one day be depleted. For the sun, from now on, the temperature will slowly rise, when the earth reaches about 10 billion years old, the hydrogen in the middle of the sun is burned out, but the temperature inside is still very high, and then the outer helium will be burned, so the sun will suddenly expand, increase in size many times, and form a red giant.

The theoretical life of the Sun is about 5 billion years away, but many people ignore that in about three billion years, the Milky Way will collide with the Andromeda Galaxy, and both galaxies will disappear and merge into a larger galaxy, which may cause a large number of planets to be destroyed and recombined in the collision.

The sun is now in the prime of stardom, that is, the main sequence of the sun is called by scientists, the main sequence of the sun has a total of 10 billion years, and now the sun has spent 5 billion years, so the sun still has 5 billion years to be in the main sequence period, after which the sun will expand into a red giant star into the period of star decline, at this time it will engulf Mercury and Venus and even the earth, then I think it is the real end of the world.

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, the lifespan of a yellow dwarf is roughly 10 billion years, and the current sun is 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. Since helium combustion produces more energy than hydrogen combustion, the outer layers of the Sun will expand and release a portion of the outer atmosphere into space. When the process of switching to new fuels ends, the mass of the Sun will decrease slightly, and the outer layers will extend to the current orbit of the Earth or Mars (at which point the two planets will be farther away from the Sun due to the decrease in the mass of the Sun).

The sun sometimes heard the password for the first time. How can there be such an idea that Qiqi will not know.

The Sun is a yellow dwarf, and the lifespan of a yellow dwarf is roughly 10 billion years, and the Sun is currently about 100 million years old. So, the sun theoretically has 5 to 6 billion years to live. About 50 to 6 billion years from now, when the Sun's main-sequence phase ends, the Sun's light is expected to be twice as bright as it is today, and the average temperature of the Earth is about 60 times higher than it is today.

According to a study by the University of Warwick in the United Kingdom, it is true that the sun expands and swallows the Earth, but at least for 6 billion years, the sun's life will not come to an end.

The impact of solar longevity on the solar system:For the solar system, when the sun is finished, the tree will fall apart. And the so-called end of the sun does not mean that the sun is hanging, but that the gravitational pull of the sun can no longer control the celestial bodies of the solar system.

Let's assume that if the sun suddenly disappears, the planets will fly out in turn along the tangent. This is so because, according to the general theory of relativity, the essence of gravity is the curvature of space-time.

In about 5 billion years, the Earth should be destroyed by a stellar collision or the engulfment of the sun's life cycle.

At that time, it will be accompanied by **, the sun still has about 5 billion years of life, and the external factor is the sun first, because it is the closest planet to the earth and can fate on the right earth.

That is to say, all the energy and power on the earth come from the sun, and once the sun has three lengths and two shorts, it will inevitably affect the earth. Before the 30s of this century, people always thought that the sun would one day burn out, turn from white to orange and then to red, and finally become a dark star that was silent, but its brilliant life.

In the 30s, when physicists learned the mystery of the sun's light, the situation was very different. It turns out that the Sun's energy comes from its thermonuclear reactions, and the Sun's lifetime will pass through the gravitational contraction phase, the main-sequence star phase, the red giant phase, and the compact star phase. The main sequence phase is the period of stability of the Sun.

Related Notes: The Earth rotates from west to east while revolving around the Sun. At present, it is 100 million years old, and there is a natural satellite - the moon, and the two form a celestial system - the Earth-Moon system. It originated hundreds of millions of years ago from the primordial solar nebula.

The radius of the Earth's equator is kilometers, the polar radius is kilometers, the average radius is about 6371 kilometers, and the equatorial circumference is about 40075 kilometers. The Earth's surface area is 100 million square kilometers, of which 71% is oceans and 29% is land. The main components of the atmosphere are nitrogen and oxygen, as well as small amounts of carbon dioxide and argon.

The lifespan of the sun is about 5 billion years. According to scientists' estimates, it is estimated that in another 5 billion years, most of the sun's hydrogen will coalesce into heavier helium, which needs a higher temperature to polymerize into carbon, because helium is heavier.

Its gravitational pull will be stronger, so that the pressure of the center of the sun increases, when the gas pressure increases, according to the law of gas, the temperature will automatically increase, when the sun is mostly helium, its core temperature will increase to 10 times the current level, reaching 100 million degrees, helium will polymerize into heavier carbon, and then due to gravity will produce a higher temperature and polymerize carbon into nitrogen, and finally the sun will disappear.

The basic structure of the sun.

The sun is made up of ordinary gases, of which hydrogen accounts for about 27%, helium accounts for about 27%, and other elements account for 2%. The sun can be divided into nuclear reaction zone, radiation zone and convection zone, and solar atmosphere from the center outward. The atmosphere of the Sun.

Like the Earth's atmosphere, it can be divided into various spheres according to different heights and different properties, that is, from the inside to the outside, it can be divided into photospheres, chromospheres and corona. Three floors.

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 part of the Sun's inner core has been undergoing nuclear fusion reactions, and the solar 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 nuclear fusion reaction of solar hydrogen has been going on for 4.5 billion years, and the remaining hydrogen fuel can last for 5 billion years.