How many years does the sun live and how many years does the sun live

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.

What is happening inside the sun is nuclear fusion.

The primordial heat of the sun is due to its internal pressure. According to the principle of the law of gravitation, the greater the mass of an object, the greater its gravitational pull. In the early years, when the sun snowballed, as the mass increased, the gravitational pull became stronger, the more material it attracted around it, the more mass was increased, and so on, the mass of the sun became larger and larger.

At the same time, the greater the mass, the greater the internal pressure, so that the temperature continues to rise. Thermonuclear fusion occurs under sufficient pressure (called critical pressure) and a suitable ignition temperature. As the mass of the primordial sun continues to increase, the internal pressure and temperature rise, and after the conditions for thermonuclear reactions are met, the sun begins to shine and become a star.

Generally speaking, for a gas planet to become a star, it must have a certain mass, so that the pressure and temperature inside it can meet the conditions for a thermonuclear reaction, and this mass is called critical mass. A typical example is Jupiter, the largest gaseous planet in our solar system, which is also a gaseous planet composed of hydrogen, but because its mass is less than the critical mass, the internal pressure and temperature cannot meet the conditions for thermonuclear fusion, so it can only be a gaseous planet. However, it is a potential sun, and some scientists speculate that after the destruction of the sun in the future, Jupiter, which is not constrained by the sun, will attract the surrounding planets to form a small solar system by virtue of its position as the leader of the solar system, and at the same time continue to absorb the surrounding matter to increase its mass, and after reaching a critical mass, it will shine and become another sun, but that will be 5 billion years later.

The sun has been around for 5 billion years. At the current rate of reaction, it can be stable for at least 5 billion years. The Sun is currently in middle age.

In about 10 billion years, it will become a red giant, and in another 1 billion years, it will become a white dwarf.

The sun emits energy in the form of nuclear fusion, and in the process it loses mass, and when the mass is lost, the sun's lifespan ends, and this process is very long, 10 billion years, and the sun can also shine for 5 billion years.

The Sun is a small mass star, and it's in the prime of life, and with the mass of the Sun, it's going to stay in the main-sequence star for 10 billion years, and now the Sun is only 5 billion years old, so the Sun will be in its current volume for another 5 billion years.

I remember that it was 10 billion years old in "The Universe and Man", and now the sun is in middle age, and it is now about 5 billion years old, and only then with the mass of the sun, it should have collapsed into a white dwarf (if I remember correctly).

The Sun is now in middle age, about 10 billion years old.

10 billion years, and now 5 billion years have been lived.

Scientists still have 5 billion years to go, and I think modern technology is not accurate...

It must have been about 10 billion years since the birth of a black dwarf.

In fact, these calculations are not accurate, and even the life span of a person is not good.

The Sun is currently in middle age.

When the fuel is burned, it is shrinking towards the infinite density singularity.

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 was formed about 100 million years ago in a cloud of collapsed hydrogen molecules. As a star, the Sun, its overall appearance is 38.3 billion trillion trillion watts of luminosity and an absolute magnitude. It is a yellow G2 dwarf star with an effective temperature equal to 5800 degrees Kelvin.

The average distance between the Sun and the Earth orbiting it is 149597870 kilometers (light seconds or 1 astronomical unit). By mass, its material composition is 71% hydrogen, 26% helium and a small amount of heavier elements. They both release energy through nuclear fusion, and according to the theory, the last nuclear fusion reaction of the sun produced substances such as metals such as iron and copper.

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.