How many years is the life span of the earth?

How many years is the life span of the earth?

I think this question of the building owner should refer to the living environment for human beings. It's not a good question. Let me answer you now. I'm excluding the damage of human beings to the earth's environment. Let's talk about the sun. The life span of the sun is 1 billion years. Now it has passed 5 billion years. The hydrogen element of the sun can burn for 4 billion years, and the helium element can

What is the life span of the earth

How long is the life span of the earth? It is estimated that the earth has survived for 4.6 billion years. But how long can it live? Scientists believe that if the earth is allowed to run freely, it may exist forever. But if there are other external factors interfering with it, the earth may die. The first external factor is the sun, In other words, all the energy and power on the earth come from the sun. Once the sun is short, it will harm the earth. Before the 1930s, people always thought that the sun would burn out one day, turn from white to orange, then turn red, and finally turn into a silent dark star, In the 1930s, when physicists learned the mystery of the sun's glow and heat, the situation was very different. It turned out that the sun's energy came from its thermonuclear reaction, The life of the sun will go through the stages of gravitational contraction, main sequence star, red giant and compact star. The main sequence star stage is the stable stage of the sun. This stage will last for 10 billion years. At present, the sun only spends half of its time and is in the middle age. Once the sun reaches the stage of red giant, the end of the earth will come, This will happen billions of years later. Apart from the sun's interference with the earth, are there any other factors? Some scientists believe that the sun may have a brother, a companion star of the sun, which keeps circling the sun day and night. Every 26 million years, it will turn to the nearest place to the sun to "make waves" and its strong gravity will cause great disturbance to many comets, There are 1 billion comets in the solar system. Due to the collision, the earth and other planets will become the "target" of these comets. If the mass of the comet colliding with the earth is large enough, the consequences will be unimaginable: the light ones will die out, and the ecology will change dramatically; the heavy ones will fall apart, and the earth will be "shattered". However, this sun companion, which may bring accidents to the earth, has not been found, But many scientists believe that it exists. Which side of space will destroy the earth? When will the earth die

How many years has the earth lived?

The earth's current life span is 4.6 billion years. As for how long the earth will exist in the future, it is still unknown. Here are the reference materials
How long is the life of the earth?
It is estimated that the earth has lived for 4.6 billion years. But how long can it live?
Scientists believe that if the earth is allowed to run freely, it may exist forever, but if other external factors interfere with it, the earth may die
In other words, all the energy and power on the earth come from the sun. Once the sun is short, it is bound to harm the earth. Before the 1930s, people always thought that the sun would burn out one day, turn from white to orange, then turn red, and finally turn into a silent dark star, In the 1930s, when physicists learned the mystery of the sun's glow and heat, the situation was very different. It turned out that the sun's energy came from its thermonuclear reaction, The life of the sun will go through the stages of gravitational contraction, main sequence star, red giant star and compact star. The main sequence star stage is the stable stage of the sun. This stage will last 10 billion years. At present, the sun only spends half of its time and is in its middle age. Once the sun reaches the stage of red giant star, the end of the earth will come. Of course, it will be billions of years later
Apart from the sun's interference with the earth, are there any other factors? Some scientists believe that the sun may have a brother, a companion star of the sun, which keeps circling the sun day and night. Every 26 million years, it will turn to the nearest place to the sun to "make waves and wind". Its strong gravity will cause great disturbance to many comets. One billion comets will collide in the solar system, The earth and other planets will become the "target" of these comets. If the mass of the comet colliding with the earth is large enough, the consequences will be unimaginable: the light ones will die out, and the ecology will change dramatically; the heavy ones will fall apart, and the earth will be "shattered". However, this sun companion that may bring accidents to the earth has not been found, but many scientists believe it exists