The lifespan of the earth, do humans know, does the earth have a lifespan?

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. 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 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.

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Dazhi understands a little, not very accurate, everything will change, everything is not certain,

The earth has a lifespan. In 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 lifespan. In 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 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.

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 belongs to the solar system, and its fate is of course closely related to the sun, and 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 able 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.

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.

The Earth is 4.6 billion years old and will probably exist for another 5 billion years.

Personally, I think that the earth also has a lifespan, but we don't know how long it will live.

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.

If nothing else, the Earth will last at least another 5 billion years. When the sun turns into a red giant, some scholars** say that the earth may be 78 million kilometers away from the sun, and it is very likely to fall into the sun. But some scholars say that strong solar winds may "blow" the Earth farther; When the sun runs out of fuel, the sun will also turn into a brown dwarf once and for all; If the earth can survive the catastrophe by then, the sun will be completely cold.

Scientists have come to a new conclusion through research that in many years, the sun will radiate more heat, meaning that the earth will be overheated and unable to retain liquid water. Scientists at the University of Colorado used a 3D computer model to simulate the impact of different factors on the habitability of the earth, and entered three variables, land, sea and air, to arrive at different numbers than before. According to figures, it will be 1,02 billion years before it is necessary for humanity to leave the Earth.

The results of this study are undoubtedly good news for mankind.

Earth is one of the eight planets in the solar system (Pluto was classified as a dwarf planet in 2006 because of its different trajectory from the other eight planets), and is ranked third in order of proximal to farthest from the Sun. It has a natural satellite, the Moon, and the two form a celestial system, the Earth-Moon System. Earth, as a planet, originated from the primordial solar nebula 4.6 billion years ago.

The Earth interacts with other celestial bodies in outer space, including the Sun and the Moon.

The Earth is home to millions of creatures, including humans, and is the only celestial body in the universe where life is known. The radius of the Earth's equator is kilometers, the polar radius is kilometers, the average radius is about 6,371 kilometers, the circumference of the equator is about 40,076 kilometers, 71% of the earth is ocean, 29% is land, so the earth is blue in space.

Earth is the only planet where humans live among the planets discovered so far. The earth is also known as the "earth". The third planet in the solar system close to the Sun is a triaxial ellipsoid with slightly flattened poles and a slightly bulging equator.

Surrounded by an atmosphere, the surface is land and sea, with humans, flora, fauna and microorganisms.

I believe that if people don't care for and protect the environment, the life span of the earth may not last for 1 billion years. So I hope that everyone in the world will protect the environment so that our beautiful and lovely earth can live for a few more years.

The life span of the earth should still be very long, and the resources on the earth that you are talking about are getting less and less, which is only related to how long the future of mankind can last. Theoretical physicist Stephen Hawking**, human beings will be extinct within two hundred years, before talking about a thousand years, he said that in the process of evolution, human beings carry selfish genetic code in their genes, so people are naturally selfish, unlimited grabbing of the earth's resources, at the current rate, human beings are likely to disappear in two hundred years. Humanity is gone, and the Earth still exists in this universe, and maybe when it hits a black hole, the Earth will be finished.

It is estimated that there are about 3,000 years left for human survival (under the current situation), and if countries develop new energy sources, it will be a little longer, and if the centuries like the Cretaceous and Ice Ages change, the life span of the earth can be extended to 10 billion years.

According to technological development, the stable use of antimatter energy should be able to be achieved within 50 years, without pollution, and your idea of a big war is not right......Human beings are intellectual beings, and this situation will lead to.

1.The remaining 1% may hang up due to excessive grief.

2.The entropy of the Earth has increased dramatically.

No one knows this, just live a good day, and don't worry about the fact that you can't change!

If you don't do it in 200 years, the earth will be doomed! Our great-grandchildren had to adapt to the earth at that time, survival of the fittest! Otherwise eliminated!

The life span of the earth is 10 billion years, and now 5 billion years have passed, and there should be 51 years left, unless human beings have a way to use high-tech machines to completely change the internal molecular structure of the sun after it turns into a red giant, perhaps at the atomic level, we are finished. Or before the sun dies, we move the Earth to another star that still has a long lifespan to be cared for by that star. Or we will withdraw all of humanity to one star.

From an energy point of view, the earth's resources are shrinking day by day, especially if they cannot go deeper. But at that time, people's lives will be very hard, and the prices will be very expensive. It's a mess everywhere. Civilization is no more.