How many hundred years will the earth live???

The Earth has lived for 4 billion years, is in the prime of life, and can live for another 5 billion years. In 5 billion years, the sun will become a white dwarf because it depletes its energy, and the density will become smaller, and the solar system will be destroyed.

In 1 billion years, the Sun will turn into a red giant and swallow the Earth.

Red giants are a process in the evolution of ordinary stars: when the hydrogen in the central region of the star is depleted to form a nuclear sphere made of helium, the thermonuclear reaction of hydrogen fusion cannot continue in the central region. At this time, the gravitational weight is not balanced by the radiation pressure, and the central region of the star will be compressed, and the temperature will rise sharply.

When the temperature of the central helium nucleus rises, the layer of hydrogen-helium mixture immediately attached to it is heated to the temperature at which hydrogen fusion is initiated, and the thermonuclear reaction resumes. As the helium sphere grows, the hydrogen combustion layer expands outward, causing the outer layer of the star to expand and transform into a red giant or red supergiant.

About 5 billion years ago, when the sun was almost running out of energy due to its internal energy, and life on earth was inseparable from the sun. But only if humanity doesn't destroy itself first.

About 5 billion, that is, when the sun is destroyed.

From 1960 onwards, the tide slowly began to turn again, and the pendulum swung again. As a result of the development of new measuring instruments, a great deal of basic new knowledge about the physical environment of the Moon and planets (new measuring instruments were a by-product of the Second World War) was obtained. It is more important to be initially installed for use on land, and later on space vehicles.

Young scientists, not only astronomers, but also geologists, chemists and biologists, are once again drawn to planetary research. The development of the discipline requires them all to participate.

Now we know that the building blocks of the origin of life are to be found in physics and chemistry. Whenever a standard primordial atmosphere is exposed to the usual energy sources, the building blocks of life on Earth are created in the atmosphere within days or weeks. Organic compounds have been found in meteorites and in interstellar space.

Even small amounts of organic matter have been found in unsuitable environments such as the Moon. It has been speculated that there is also organic matter on Jupiter, on the outer planets of the solar system, and on Titan, Saturn's largest moon, and now, both theoretical and practical observations point to the fact that planets are the usual companions of stars, if not their indispensable companions; Not like at the beginning of this century.

The prevailing view in the last decade or two is a very rare phenomenon.

For the first time in history, we have the tools to make contact with civilizations on other planets. The amazing fact is that the 1,000-foot-diameter radio astronomy telescope at the National Center for Astronomy and Ionospheric Research in Arecibo, Puerto Rico, managed by Cornell University, will be able to communicate with the same radio telescope anywhere in the Milky Way. We have tools that can communicate over distances of hundreds or thousands of light-years.

The range we can communicate with is tens of thousands of light-years, and there are hundreds of billions of stars in that range. The hypothesis that there are technologically advanced civilizations on other planets can stand up to experimentation. It has moved away from the stage of pure speculation and is now in the experimental stage.

It's still early. We will live millions more and go back and forth, and we are still far from **.

How can the life span of the earth be recorded in a hundred years?