How many more years can the earth last? How many more years will the Earth exist

No one can say how many years the earth can last, because the earth is not a star and will not deplete its own energy, and it may not be destroyed until the end of the universe, but it is already impossible to say how many billions of years later.

As for the life on the earth, before the sun is destroyed, it will all be destroyed, because when the sun evolves into an abnormal star, the radiation to the earth will increase a lot, and the temperature of the ground will melt the lead, and no life will survive.

Earth's energy is decreasing? Energy is conserved, not to mention solar energy, how can it be reduced? I think energy is decreasing, but there are still a lot of renewable energy.

Matter is indestructible and energy is conserved. The earth's energy is decreasing, which is obviously an unscientific statement.

I've watched too many disaster movies, and I should also watch more martial arts movies and hero movies, hehe.

There are still billions of years to go, which is about infinite for humans.

The current lifespan of the Earth is 4.6 billion years, and it is still unknown how long the Earth will exist in the future. Here are the references.

How long is the life span of the earth?

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 was lost. 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 life 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 drastic changes in 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.

4.6 billion years The birth of the earth has been 45-4.6 billion years ago, but we only know more clearly about its history of nearly 600 million years. What happened in the history of the earth is mainly recorded by the rock formations formed at that time and the paleontological fossils they contain; Although the organisms on the earth appeared as early as 30 billion years ago, they have been stagnant for a long time at a very low stage, mainly some low-level fungal and algae plants, and the fossils they leave behind do not show much, and the rock layers that preserve these fossils have mostly undergone different degrees of metamorphosis, which makes this early history of the earth more difficult to understand. It is only about 600 million years ago that a large number of higher organisms appeared, and a large number of unmetamorphized sedimentary rock layers and animal fossils have been preserved, thus providing many more reliable materials.

Therefore, the history of the earth over the past 600 million years is now described in more detail and credible. This is similar to the exposition of human history, which was relatively vague and brief before the written record, but only after the written record did the history of mankind become clear and detailed. In short, the history of the earth and the history of mankind are blurred and brief the farther away from the present, and the clearer and more detailed the closer they are.

From the birth of the earth to the present, there are about 46 years, and the life span of the earth depends on the sun, because the earth itself is a rocky planet and has no internal decay, so it will not destroy itself, but after 5 billion years, the sun will transform into a white dwarf, and then the end of the earth will come.

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 the Earth's core is a uranium fission reactor, as a new theory suggests, since the diameter of the uranium core has shrunk from about 13 kilometers to 8 kilometers in the past 4.5 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.

Scientists judge based on the ancient rocks on the earth: the earth is about 4.6 billion years old, it has entered the middle age of the earth, and it can last for about 4.6 billion years!

If humans continue to destroy the earth, it can only last for about 100 years at most!