How many years does the earth survive? How many more years will the Earth 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 life and death of the earth is based on whether life can reproduce on the earth. Life on Earth does not thrive with the light and heat of the sun. If the activity inside the Earth ceases, it will become a dead planet, volcanoes will never erupt again, plate activity will stop, ** will disappear, hydrospheric activity will flatten out, and more importantly, the magnetic field will disappear, all kinds of high-energy particles will radiate directly to the ground, and all kinds of life will be difficult to survive.

And all that. Therefore, the future life of the Earth will not be the 5,06 billion years that the Sun will be able to provide light and heat stably. If the structure of the Earth's core is traditional iron-nickel, then life on Earth can enjoy the protection of the Earth's magnetic field for another 4 billion years.

If, as a new theory suggests, the Earth's core is a uranium fission reactor, since the diameter of the uranium core has shrunk from about 13 kilometers to 8 kilometers in the 4.6 billion years, that is, 75% of the uranium has been consumed, so it is calculated that the uranium fission reaction in the Earth's core can only last for another 2 billion years, that is, the Earth will become a dead planet in 2 billion years.

The "lifespan" of the Earth depends on the duration of the sun's nuclear fusion, which is about 5 billion years.

At present, the core of the sun is in a period of hydrogen fusion, and the light pressure and gravity of hydrogen fusion are balanced to maintain the shape of the sun. When the hydrogen in the Sun's core is insufficient to sustain fusion, the light pressure weakens and the Sun collapses toward the center until the pressure is strong enough to ignite helium fusion. Once helium fusion begins, the Sun transforms from a main-sequence star into a red giant, expands outward, and will eventually engulf Earth.

Consider, the remaining amount of hydrogen. The sun can also be stable for 5 billion years. Therefore, the earth will survive for about 5 billion years.

The Earth is very long-lived, with 4.6 billion years to live, and only exists for 400 million years. But it's hard to say how long humans will survive......

It can also survive for about 5 billion years.

Scientists** Earth is now in its prime of life. The oldest geological body found on Earth, a metamorphic rock, is about 3,700 mA (3,700 million years old, or 3.7 billion years) has been discovered in Australia. It is estimated that the Earth should be more than 4,600 mA due to weathering, etc., and this estimate is also calculated from the isotopes of the rocks on the Moon (the Moon and the Earth were created at about the same time).

Of course, the above is all speculation, not that the Earth is currently 4600 mA (4.6 billion years). It is then estimated that there are about 5 billion years left based on the remaining amount of the sun's fusion raw material (hydrogen), and in its later years, the sun will evolve into a red giant. The Sun will begin to expand in size, engulfing the Earth and several other planets that are closer to it.

Of course, it is speculated that the earth will live for 5 billion years, and no one can confirm it. In addition, it is necessary to exclude the destruction of human beings, such as the day when a nuclear war broke out ...

The earth does have a more definite time of destruction. It has something to do with the sun. The life span of the sun is about 5 billion years, and after 5 billion years, the helium on the sun will be depleted, and the sun will enter the stage of stellar old age.

First, the Sun will explode in size and become a red giant. It will swallow the Earth into the Sun, and the farthest will swallow Venus. Planets swallowed up by the sun will be destroyed.

Then, the Sun shrank dramatically, shrinking into a white dwarf. As for the Earth itself, it will not destroy itself unless it is hit by a very large asteroid that causes the Earth to shatter. Of course, nuclear war, the destruction of the earth's magnetic field, and drastic changes in atmospheric composition and climate will also lead to destruction, but this generally refers to the destruction of human civilization, not the destruction of the earth itself.

By the way, in recent years, there is also a popular saying that in hundreds of millions of years, Jupiter, the Earth's close neighbor, may undergo nuclear fission inside and upgrade from a planet to a star due to its excessive volume and mass, which will have a huge impact on the Earth and may also cause the destruction of the Earth. Because Jupiter itself is a huge ball of gas, its mass has reached the critical point of becoming a star, and it is possible to become a star. However, this claim is only a scientific speculation, and no one can confirm the authenticity of it.

All of the above are hand-played, I hope it helps you.

Of course, it is speculated that the earth will live for another 5 billion years.

Scientists** The life span of the sun is 10 billion years, and now it has passed 5 billion years, and in 5 billion years the sun will become a white dwarf, I will talk about the details later.

The current age of the Earth is 4.6 billion years, and if we do not take into account the influence of human or other factors on the Earth, the result of the Earth's life will be swallowed up by the expanding sun. The details are also said later.

So what is the human factor? That is to say, human beings have wantonly deforested, polluted water resources, emitted polluting gases, and even conducted nuclear tests. If these are serious, they will have a devastating impact on the planet.

There are other factors, and the other factors are comets, asteroids hitting the Earth, and so on. It could also lead to the destruction of the planet.

Without further ado, let's talk about the evolution of the sun.

The life span of the sun is 10 billion years, and now it has passed 5 billion years, and in about another 4 billion years, the hydrogen used for nuclear fusion in the interior of the sun will be exhausted, and at the same time the nuclear fusion of the helium nucleus will begin, at this time the sun will begin to expand, and in about a billion years, the outer periphery of the sun will expand beyond the current solar system Mars, and then the celestial bodies including Mars will be swallowed, and of course the earth will be no exception, at this time the sun will be on the verge of death. The Sun then undergoes a gravitational collapse and becomes a celestial body the size of the Earth, called a white dwarf......At this point, the sun will die, and our planet will cease to exist.

Of course, don't worry, by that time, human science and technology will be unimaginably advanced, and I am afraid that we will have already left the earth and moved to other planets.

Modern geology and geophysics generally agree that the age of the Earth is about 100 million years (109 years, 1%). Age is measured by radiometric dating of meteorites. This is consistent with the results of the oldest stones and moon rocks on Earth.

In addition, there are also measurements that use radioactive elements in the earth and the isotopes it metamorphoses, and the results are roughly the same.

With the development of science and technology, the earth's resources are gradually scarce, the environment is becoming more and more detrimental, and the living conditions on the earth are becoming more and more depressed.

Professor Stephen Hawking, a renowned theoretical physicist, believes that our human days are numbered unless we can find a new planet to immigrate to.

Worrying:

In ancient times, there were people in the Qi Kingdom who were worried that the sky would fall, the earth would fall, and they would have nowhere to live, so they could not eat and sleep. Another man, who was grieved by the sorrow of this man, enlightened him, saying, "The heavens are but a gas that has accumulated up, and there is no place without air."

You move every move, breathe and breathe, and you move in the sky all day long, why are you still worried that the sky will fall? The man said, "The heavens are gas, so won't the sun, the moon, the stars, and the stars fall?"

The one who enlightened him said, "The sun, the moon, the stars, and the stars are also glowing things in the air, and even if they fall, they will not hurt anything." And the man said, "

What if the ground sinks? His enlightener said, "The earth is nothing but a pile of clods, which fills all over the place, and there is no place where there is no clod, and you walk and jump, and you move on the earth all day long, why do you worry that the earth will sink?"

After this person's explanation, the country was relieved and happy; The people who enlightened him were also relieved and happy.

Humans have ruled the earth for 2 million years, maybe another 2 million or 20 million years, humans are gone, and the earth is still there. The Earth will live for about another 5 billion years.

The sun can live for another 5 billion years.

This can become the life cycle of the earth.

But civilization may have made us live on other planets by then.