Is the Earth in old age right now?

Nonsense, the earth is less than middle-aged. The age of the sun and the earth is about the same, both are 4.6 billion years, and the lifespan is the same as that of the sun is 9.6 billion years, so the earth is in middle age like the sun.

Even if it is true as you say, it has nothing to do with us, because human civilization has not even reached 1 hour.

No, it's still young, there are still a lot of raw materials, and the resources are not exhausted.

How did your teacher explain it?

100 million years. As of 2022, the age of the Earth is about 100 million years. In 1953, geochemist Claire Peterson used isotope methods to determine the age of the Earth for the first time about 100 million years. It was the first attempt to use scientific methods to find out the age of the earth.

It was the British physicist Halley.

Earth's age is the time it takes for the Earth to accumulate from the primordial solar nebula to form a planet. Scientists' best estimate of the Earth's age is 100 million years, and what is commonly referred to as Earth's age refers to astronomical age.

There are several different concepts regarding the age of the earth. The astronomical age of the Earth refers to the time when the Earth began to form, which is the same as the origin of the Earth.

The hypothesis is closely related.

In 1907, Claire Patterson finally passed the meteorite.

The proportion of lead-uranium in the earth is set as the initial value, and the average ratio of lead-uranium in the earth's rocks is set as the final value, and the age of the earth is calculated to be between 4.1 and 4.6 billion years old.

1. Think of the entire history of the Earth as a calendar year.

2. Record the history of the earth in the form of one page a year.

3. Compare the age of the earth to the length of a female wanderer's outstretched arms (about 6 feet).

4. Think of the history of the earth as a time period: from the time you were born to the first day you entered high school.

Think of the entire history of the Earth as a calendar year.

Write down the history of the earth on a page a year.

Comparing the age of the earth to the length of a lady's outstretched arms is by no means (about 6 feet).

Think of the history of the earth as a time period: from the time you were born to the first day you entered high school.

Earth is the third planet in the solar system from the inside to the outside, and it is also the terrestrial planet with the highest diameter, mass, and density in the solar system. It is also often referred to as the world. The English word earth comes from Old English and Germanic languages.

The Earth is 4,446 billion years old, and a natural satellite, the Moon, orbits the Earth in a 30-day cycle, while the Earth rotates in a cycle of nearly 24 hours and orbits the Sun in a one-year cycle.

The Earth is an irregular spheroid with slightly flattened poles. The Earth rotates from west to east while revolving around the Sun. The combination of the Earth's rotation and its orbital motion gives it the day-night alternation and the seasons on Earth (the speed of the Earth's rotation and revolution is uneven).

At the same time, due to the gravitational influence of the sun, the moon, and nearby planets, as well as the earth's atmosphere, oceans, and internal materials, the direction of the earth's axis of rotation in space and the earth's body changes. The inertial centrifugal force generated by the rotation of the Earth causes the spherical Earth to gradually expand from the poles to the equator, becoming the current slightly flattened spheroid, with a polar radius about 21 kilometers shorter than the equatorial radius. The time when the Earth accumulated from the primordial solar nebula to form a planet to the present.

The current best estimate of the Earth's age is 100 million years, and what is commonly referred to as the Earth's age is its astronomical age. The astronomical age of the Earth refers to the time when the Earth began to form to the present, which is closely related to the hypothesis of the origin of the Earth.

It should be checked according to the time of the earth's existence, which has existed for 5 billion years now, and should exist for a long time and will not die out for the time being.

It can be observed by the surface structure of the earth, so that the age of the earth can be determined. The Earth has been around for 4,046 billion years now. The earth may die out in 4 billion years, because at that time, the Taiyuan Xiangyang will exhaust all the relatives and filial piety socks, and helium fusion will occur, so it will cause the earth to be swallowed.

So far, it has been boring for hundreds of millions of years, and there is no way to determine the time of disappearance, so it is necessary to judge according to the radioactive materials in the earth's interior, and to understand the amount of energy and heat emitted by the earth.

According to the temperature of the center of the earth, the initial temperature, the thermal conductivity, it is measured by a formula. More than 4 billion years or so. will die out in more than 5 billion years.

The age of the earth should be based on the time of the earth's existence, and now the earth has existed for 5 billion years, and it is not known when it will die.

That's about the same age, 40 years old.