How many years are left on Earth, and how many years are there on 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 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.

It should be 5 billion years, unless one day a huge meteorite comes early and destroys the earth.

Some people say that in 10 million years the etymology of human destruction will lead to the destruction of the earth, and some people say that after 100 million years, the melting of the glacier will cause the destruction of the earth.

In 3.5 billion years, the sun evolved into a red giant star and directly swallowed the earth.

According to the latest scientific reports, the lifespan of the earth depends on the lifespan of the sun, and the current lifespan of the sun is still 5 billion, and I think that is the real end of the world

There are still 5 billion people in the solar system, and we don't know exactly when the earth will die.

Say as long as you want, because we can't see the day when the earth doesn't exist.

It is unknown, even if humanity perishes, the earth will still exist.

The Earth is 4.6 billion years old.

Scientists analyze that the earth has existed for 4.6 billion years and will continue to last for 5 billion years, so the life span of the earth is about 9.6 billion years.

According to geoscientists, the Earth is at least 4.6 billion years old. The written history of mankind is only a few thousand years, and it is only a moment in the long river of the universe.

To understand the lifespan of the Earth, we must first look at the lifespan of the Sun. The Sun is the closest star to the Earth and the only luminous celestial body in the solar system, which radiates huge energy outward through nuclear fusion reactions, continuously transmitting light and heat to the Earth, and is the root of all life on Earth.

The Earth's atmosphere is mainly made up of nitrogen and oxygen. The tropics receive more solar energy than the polar regions and redistribute it through atmospheric and oceanic circulation. Greenhouse gases also play an important role in regulating the surface temperature.

The climate of a region is determined not only by latitude but also by factors such as altitude and proximity to the region and the ocean. Severe weather such as tropical cyclones, thunderstorms, and heat waves often occur in a wide area and have a great impact on life.

The Earth's gravitational pull interacts with other objects in space, especially the Moon, which is the Earth's only natural satellite. It takes about a few days for the Earth to revolve around the Sun. The Earth's axis of rotation is tilted relative to its orbital plane, thus producing seasons on Earth.

The gravitational interaction between the Earth and the Moon causes tides that stabilize the direction of the Earth on its axis and gradually slow down its rotation. Earth is the densest planet in the solar system and the largest and most massive of the four rocky planets. The earth is the home of human beings living together, and there is only one earth for human beings.

Generally speaking, the earth is about 4.6 billion years old from its birth to the present.

It would be more accurate to say that modern geology and geophysics generally agree that the age of the Earth is about 100 million years (1% in 109 years).

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.

The Earth's equatorial radius is kilometers, the polar radius is kilometers, the average radius is about 6371 kilometers, and the equatorial circumference is about 40076 kilometers. The surface area of the earth is 100 million square kilometers, of which 71% is oceans and 29% is land.

Earth is one of the eight planets in the solar system:

It is the third planet in order of closest to the sun, and it is also the terrestrial planet with the largest diameter, mass and density in the solar system, 100 million kilometers away from the sun. The Earth rotates from west to east while revolving around the Sun. It is 4,04.6 billion years old, and it has a natural satellite, the Moon, which forms a celestial system, the Earth-Moon System.

It originated from the primordial solar nebula 4.6 billion years ago. The interior of the earth has a core, mantle, and crust structure, and the outside of the earth has a hydrosphere, atmosphere, and magnetic field. The Earth is the only celestial body in the universe where life is known to exist, and it is home to millions of living beings, including humans.

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 Earth is about 4.6 billion years old.

Scientists use radioactive elements to estimate the age of the earth, because radioactive elements and the isotopes they metamorphose into are not affected by changes in external conditions when radioactive elements fission. For example, uranium, a radioactive element with an atomic weight of 238, will seep into the cherry blossoms and lose half of its original mass after fission every 4.5 billion years, transforming into lead and oxygen. Scientists calculate the age of the rock based on the amount of uranium and lead present in the rock.

The earth's crust is made of rocks, so the age of the earth's crust is about 3 billion years, and the age of the earth is about 4.6 billion years old.

4.6 billion years.

The time when the Earth accumulated from the primordial solar nebula to form a planet to the present. Stuffy imitation.

The age of the Earth is usually referred to as its astronomical age. At the end of the 60s of this century, scientists took rock samples from the surface of the moon and found that the age of the moon was between 44 and 4.6 billion years. However, this is speculated on the basis of circumstantial evidence.

In fact, no conclusive records have been found on the earth itself to prove that it lived for 4.6 billion years.