Why is it said that the Earth has only been habitable for 1 billion years? What will happen in a bil

We all know that all the planets in the universe have their own lifespan, and scientists believe that the habitable time of the Earth is only one billion years. The reason why they made this judgment is because the sun is getting brighter and brighter, and more and more energy is being released. If the brightness of the sun continues to increase in the future, the earth will lose its habitable environment.

1. Scientists are also observing the changes in the sun's energyIt was found that in recent years the sun has released a huge amount of energy. This has not stopped and will continue. The reason why the sun keeps brightening is because the constant collapse increases the pressure and temperature of the core temperature, and the material in the core area undergoes nuclear fusion under certain conditions.

After nuclear fusion, a huge amount of energy is released, which is also the principle of the sun's ability to emit light and heat. At a time when the average human lifespan is only about 80 years, it is difficult for us to quantify the disappearance of something as long-lived as the sun. Ancient and eternal, the sun has watched our planet since the dawn of the earth.

Second, the current temperature and pressure in the core region of the sun cannot meet the conditions for nuclear fusionSo a lot of helium is produced. This will not last forever because the energy released by nuclear fusion is reduced, which affects the radiation pressure inside the sun. Without enough radiation pressure to resist gravity, the sun will collapse further by gravity, causing the temperature and pressure in the core region to rise.

But even this can't last forever, the sun itself has been shining for almost 5 billion years, which is thought to be half of its 10 billion year lifespan.

Third, this process is very slow, and the result is that the sun will get brighter and brighter. In 1 billion years, the temperature of the Earth will rise due to the huge radiation of the sun, and the increase in temperature will lead to an increase in liquid water. It is important to know that a large amount of water vapor will further exacerbate the greenhouse effect, and more water vapor will evaporate as the temperature rises.

It is not difficult to see that this is a vicious circle, and under such an effect, the temperature of the earth will get higher and higher. After the Earth's oceans are affected, it is impossible to release the internal pressure through plate movements. It is only through frequent volcanic activity that the Earth's atmosphere is constantly replenished with carbon dioxide.

Because now the earth's environment has become worse and worse, many problems have emerged. It is likely that in a year our planet will be reopened.

Maybe it's because our geological environment is getting worse and worse, and there is a possibility that there will be no grass or human death.

In the 4.5 billion years since its birth, the earth has undergone countless changes, and by studying various ancient historical relics such as rocks, animal and plant fossils on the earth, we can know what happened on the earth in the past, but can we know what will happen on the earth in the future.

A billion years from now, a day on Earth will no longer be 24 hours, but will be 28 to 29 hours, which is due to the slow self-transformation of the Earth and the day on Earth will become longer.

A billion years from now, there will be no oceans on Earth, and the whole Earth will look like a ruin, all because the sun will be brighter and hotter a billion years from now, when the Earth's surface temperature will reach 70 to 100 degrees Celsius, which will evaporate all the water on the planet. The appearance of the Earth's continents is exposed to the ground, making their appearance obvious, and the shape of the continents has changed countless times and looks completely different from today, and the tectonic plates will stop moving at that time.

The whole Earth looks as if it is another planet entirely, the temperature and atmospheric pressure on the Earth vary dramatically, there is no longer oxygen in the air, and people have to wear spacesuits to survive on the surface of the Earth. The absence of oxygen means that there will be no living life, because the composition of the atmosphere changes, the sky is no longer blue, it looks closer to gray or brown, and you will feel that the whole air is very humid, because all the water in the sea has evaporated into the atmosphere.

A billion years from now, the sun will be brighter than it is today, and people who stare at it for a long time will be blind. The color of the ground will be gray or brown, and the ocean will now be a huge basin.

If you're in it, you wouldn't have thought that the place you're in is Earth. It is very likely that the Moon is still accompanying the Earth at this time, but it is much farther away from the Earth than it is today, so from the surface, the Moon will be smaller than today, needless to say, at this time on Earth, human civilization has become history, at this time either humans have moved to other galaxies, or mankind has become extinct. The relics that once existed on the earth have disappeared due to the long-term modification of nature, and the efforts made by human beings and the mistakes made by human beings have been completely forgotten by this planet at this time.

If you stand on the surface of the earth and look at this hellish lifeless planet, you will fall into a deep sadness when you think about the prosperity of the earth in the past, and realize that nothing is as big as a planet, you cannot avoid the fate of death.

Although the earth has come to an end a billion years later, the universe has not, and other planets suitable for life were born in the universe at this time, where new life multiplied and continued, and even new intelligent civilizations were born there, and a new chapter was opened again.

Of course, all this is speculation, as for what the earth will become in the future, we can only wait for time to verify, but we are no longer there at that time.

Is the Earth suitable for human habitation in 10 billion years? It depends on what human beings are doing now. If humanity continues to behave as it is.

In the same period of time, if humans consume more energy from the earth than the earth gets from the sun, the earth will eventually be depleted. What would the depletion of the earth look like? The mass becomes lighter and is then absorbed by other planets or the sun.

If human beings reduce their energy consumption, they can change the main direction of science and technology to the study of the universe, rather than satisfying human sensory experience. Then, in 10 billion years, human beings should be able to escape the sun with the earth and run to a better living environment.

If tens of billions of years from now, the level of human technology can freely choose the planet to live on, but when there is no more suitable planet for human survival, the earth will be the most suitable planet.

Tens of billions of years from now, humanity will decide. Human beings should reduce their desire to satisfy themselves and concentrate on solving the scientific and technological problems related to the universe. To survive or to die is not only a philosophical issue, but also a question of human life and death.

In modern times, please make more contributions to the community with a shared future for mankind.