How long does the sun live and how long does the sun live

The Earth is speculated to have survived for 4.6 billion years, but how long will it live? Scientists believe that if the Earth is allowed to move freely, it may exist forever, but if other external factors interfere with it, the Earth may have an end of life. The external factor is the sun in the first place, because it is the closest planet to the earth and can have a destiny 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 long and two short, it is bound to 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. This phase will last for 10 billion years. At present, the sun is only halfway through and is in middle age.

Once the Sun reaches the red giant stage, then the end of the Earth is coming. Of course, this is billions of years away. Are there any other factors besides the sun's interference with the earth?

Some scientists believe that the Sun may have a brother, a companion star of the Sun, which orbits the Sun day and night, and every 26 million years, turns to the closest place to the Sun"Make waves"Its strong gravitational pull will cause a large disturbance of many comets, and 1 billion comets will be on a rampage in the solar system, and the Earth and other planets will become these comets"Target"。If the mass of the comet that collides with the Earth is large enough, the consequences are unimaginable: the extinction of light organisms and the upheaval of ecology; Heavy landslides and earth cracks, the earth"Broken bones"。

However, this solar companion star, which could bring misfortune to Earth, has not been discovered, although many scientists believe it exists.

The Earth is 4.6 billion years old, the Sun is about 10 billion years old...

The sun has a lifespan of 50-6 billion years. The sun is a yellow dwarf, the life span of a yellow dwarf is about 10 billion years, and the sun is about 100 million years old, so after 50-6 billion years, the hydrogen in the sun will be completely depleted, and it will begin to collapse and destroy. The Sun is a star located at the center of the solar system, a sphere intertwined with a hot plasma and a magnetic field.

The diameter of the Sun is about 10,000 kilometers, which is 109 times the diameter of the Earth, and the volume is about 1.3 million times that of the Earth, which is about 330,000 times the size of the Earth. <

The sun has a lifespan of 50-6 billion years. The sun is a yellow dwarf, the life span of a yellow dwarf is about 10 billion years, and the sun is about 100 million years old, so after 50-6 billion years, the hydrogen in the sun will be completely depleted, and it will begin to collapse and destroy. The Sun is a star located at the center of the solar system, a sphere intertwined with a hot plasma and a magnetic field.

The diameter of the Sun is about 10,000 kilometers, which is 109 times the diameter of the Earth, and the volume is about 1.3 million times that of the Earth, which is about 330,000 times the size of the Earth.

Without the sun, humans can live for about 1 year. The sun disappears suddenly, and the earth does not cool down immediately due to the warming effect of the atmosphere, but the temperature difference between the day disappears (the temperature at night is generally 10 degrees lower than during the day), and the temperature difference between the four seasons also disappears. The Earth's surface temperature drops to 0 during a month's drive and to 0 after half a year.

In the year it drops, and by this time, liquid water no longer exists.

There will be other changes to the Earth after the sun disappears:The entire solar system lost its gravitational pull, and the nine novae no longer moved around the sun. After 8 minutes, the Earth began to move in a straight line.

And the moon will still be a satellite of the earth because of the gravitational pull of the earth, but we can no longer see the moon because the moonlight is the reflection of the sun.