Does the earth have a lifespan What is the lifespan of the earth?

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. 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 turns to the closest place to the Sun every 26 million years"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. From which side of space will the Earth be destroyed by a blow from the space?

When will the earth die?

4.6 billion years ago, the Earth was born. The future of the Earth is closely linked to the Sun, which will slowly increase due to the steady accumulation of helium ash in the Sun's core, increasing by 10% over the next 1.1 billion years and by 40% over the next 3.5 billion years. Climate models show an increase in radiation arriving at Earth, with potentially dire consequences, including the possible disappearance of Earth's oceans.

An increase in the Earth's surface temperature accelerates the inorganic carbon dioxide cycle, reducing its concentration to plant-lethal levels (10 ppm for C4 photosynthesis) over 900 million years. The lack of plants leads to the loss of oxygen from the atmosphere, and then the animals will also become extinct within millions of years. And even if the sun is eternal and stable, the continuous cooling of the Earth's interior will cause the loss of oceans and atmosphere (due to reduced volcanic activity).

In the next billions of years, the water on the surface will disappear completely, and the average global temperature will likely reach 70°C. The Sun, part of its evolution, will become a red giant in about 5 billion years. Model** will then expand the diameter of the Sun to 250 times its current diameter, or about 1 astronomical unit (149,597,871 km).

The fate of the Earth is not clear, and by the time the Sun became a red giant, it had already lost about 30% of its mass, so if the tides were not taken into account, when the Sun reached its maximum radius, it would be in orbit about an astronomical unit (254,316,380 km) from the Sun, so the Earth would escape outside the Sun's loose atmospheric envelope. However, most, if not all, of today's creatures will be destroyed by excessive proximity to the Sun. However, recent simulations have shown that it is possible to push the Earth out of the solar system as tidal action and drag will attenuate the Earth's orbit.

Some of them are 5 billion years from now, when the sun runs out and throws out material that the Earth will get involved in and merge with it.

There is no eternal balance, so there is also a life span and death like life.

Of course, there is, and when the life is up, it will be destroyed.

The earth has its own lifespan because the earth is in the solar system, and the sun has its end of life.

In about 5 billion years, the Sun will enter the phase of a red giant, with the helium core contracting in response to gravity and heating up at the same time; The hydrogen cladding immediately adjacent to the core accelerates fusion as the temperature rises, and as a result, the heat generated continues to increase, conducting it to the outer layer, causing it to expand outward.

The day the Sun enters the red giant phase is the day the Earth's life ends.

It is about 10 billion years, that is, in four or five billion years, the earth will die out, because due to the end of the sun's hydrogen fusion, helium fusion begins, which is the sun turns into a red giant, swallowing Mercury, Venus, and the earth, and only Mars survives among the terrestrial planets.

The earth has a lifespan

In the 20th century, scientists used isotope geometry to calculate the life span of the Earth, and through this method, scientists found that the age of the Earth should be 4.6 billion years old.

The solar system was formed 4.6 billion years ago, and the impact of microasteroids formed the primordial Earth - a fireball in a molten state. The Earth was formed at a very high temperature, and it was completely a fireball. The reason why it did not become a star was because the mass was not large enough to give rise to a nuclear fusion reaction.

After the formation of the earth, in the following years, the temperature began to continue to fall, forming a solid crust, which covered the surface of the earth like a quilt, and under the crust, there is the mantle and the core, the temperature is very high, but due to the presence of the crust, the energy of the mantle and the core is not released quickly, on the contrary, they are released very slowly. It has been nearly 4.6 billion years since the birth of the earth, and the loss of this energy is almost negligible.

The composition of the planet

The Earth's surface is roughly a land mass of continents and islands. The remainder is covered by water, mostly oceans, bays, and other saltwater bodies, but also by lakes, rivers, and other freshwater bodies, which together make up the hydrosphere. Most of the Earth's polar regions are covered in ice.

The Earth's outer layer is divided into several rigid tectonic plates that migrate to the surface over millions of years while its interior remains active, with a solid iron core, a liquid outer core that generates the Earth's magnetic field, and a convective mantle that drives plate tectonics, among other things.

The earth has a lifespanIn the 20th century, scientists found the most reliable method for determining the age of the Earth, called isotope geometry. This approach also makes us realize that the Earth has been going through about 4.6 billion years.

However, the future lifespan of the Earth may also need to be determined based on changes in the sun. <

The earth has a lifespanIn the 20th century, scientists found the most reliable method for determining the age of the earth, called isotope geometry. This approach also makes us realize that the Earth has been going through about 4.5 billion years.

The sail or how long the life of the Earth may also need to be determined according to the changes in the Sun.

The current life span of the earth is about 4.6 billion years, and the sun can live for another 10 billion years, so the life span of the earth is about 14.6 billion years.

In 1983, several mineral grains aged 4,142 billion were found in Australia. This suggests that the Earth's crust began to form around 4 billion years ago. Of course, this is not the age of the Earth, because before the formation of the Earth's crust, the Earth also passed through a period of molten surfaces, and scientists believe that with this period, the age of the Earth should be 4.6 billion years.

How many more years can the earth live, scientists** The life span of the sun is 10 billion years, and the age of the earth is now 4.6 billion years, if you do not consider the impact of human or other factors on the earth, the result of the earth's life at the end of its life will be swallowed by the expanding sun.

Origin of Earth Formation:

The history of the earth is very long. According to radiocarbon dating, the solar system was formed about 6.5 billion years ago, while the native Earth was formed about 6.5 billion years ago. Theoretically, the formation of the Sun began 6.5 billion years ago with the gravitational collapse of a huge cloud of hydrogen molecules, and most of the collapsed mass was concentrated in the center, forming the Sun.

The rest of the space rotates and flattens out to form a protoplanetary disk, which in turn forms planets, moons, asteroids, comets, meteoroids, and other small solar system bodies. The nebula hypothesis asserts that the microplanets that form the Earth originate from the massaching masses of gas, ice particles, and dust with a diameter of 1 to 10 kilometers that are left over from accretion and collapse.

This is not yet possible at the current level of scientific competence. However, it is known that the current age of the Earth is 4.6 billion years. The Earth Fiber Mountain Ball belongs to the solar system, and its fate is of course closely related to the sun, once the sun is destroyed, the earth will of course have nowhere to live.

The reason why the sun can heat up is because of the thermonuclear reaction inside it, which consumes a lot of the sun's substance, and as the sun ages, it will also consume its own heat and eventually die, and then the earth will be gone.

However, the sun is still only in middle age, and it is still billions of years away from destruction. Of course, there are many other factors that affect the safety of the Earth, like other interstellar objects will hit the Earth, but this is unlikely, and we can also use ** to destroy them before they hit the Earth.

Finally, human behavior is also important, the development of modern nuclear **, as well as environmental problems, will pose a threat to the earth, which in turn will affect the life of the earth.

How long does the Earth live? I have thought about this question countless times, how long can our blue planet be blue, as we all know, the earth's resources are limited, coupled with the wanton destruction and pollution of human beings, our industry has developed, and the environmental problems that come with it are getting more and more serious, how long can our blue planet be supported?

According to research, the current lifespan of the earth is 4.6 billion years old, and how long it will last in the future remains to be studied by scientists. Scientists say that if the Earth can maintain its revolution and rotation, it will exist forever, but if external factors affect her, his life will also come to an end. The heat source on the earth, the light source is from the sun, the sun gives us light and warmth, according to research, the sun's energy is limited, one day it will be released, at that time, there is no light on the earth, there is no warmth, plants can not photosynthesize, there is no suitable temperature, life can not survive, and the earth will also perish.

In addition, the universe is in motion, so any planet will be likely to deviate from its orbit and hit the earth, and it is terrible for a comet to hit the earth, and the region may be shattered by it, and the earth will come to the end of its life. Exactly how long the Earth lives is still a mystery.

Happy to you.

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 move freely, I am afraid that it will exist forever, but to.

If there are other external factors that interfere with it, the earth may have an end of life.

The external factor is first of all the sun, because it is the closest planet to the earth and can have a destiny on the right earth.

That is to say, all energy and power on the earth come from the sun, and once the sun has three long and two short, it is inevitable.

Damage to the planet. Before the 30s of this century, people always thought that the sun would one day burn out and turn white.

The orange turned red again, and finally became a dark star that was silent, but its brilliant life was gone. To Ben.

In the 30s, when physicists learned the mystery of the sun's light and heat, 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 order.

Star phase, red giant phase, and compact star phase. The main sequence phase is the period of stability of the Sun. This.

The phase will last for 10 billion years. At present, the sun is only halfway through and is in middle age. Once the sun arrives.

The red giant phase, 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.

There may be a brother - a companion star of the Sun, which orbits the Sun day and night, and every 26 million years, it turns to the closest place to the Sun"Make waves", its strong gravitational pull will cause many comets.

1 billion comets will rampage in the solar system, and the Earth and other planets will become these comets.

Star's"Target".If the mass of the comet that collides with the Earth is large enough, the consequences are unimaginable: the light is born.

extinction and ecological upheaval; Heavy landslides and earth cracks, the earth"Broken bones".However, this one may give to the earth.

The unpredictable solar companion has not been discovered, but many scientists believe in its existence.