Will the world really be destroyed in 50 billion years? 5

Don't worry, it took us humans 5,000 years to invent the Shenzhou spacecraft, and after 50 billion years, I believe that human beings can master the technology of transforming planets, so the extinction is only relative, if human beings do not interfere, they should perish according to the calculation, but practice is the only criterion for testing the truth, Hawking is still alive, so the demise of the earth is only relative, as we all know, the life span of human beings is about 70-80 years old, and the time of the earth's demise is only relative to the average lifespan of planets similar to the earth, There is a big difference with reality, and the current science is relatively unreliable, 2000 years ago, human beings have always believed in many things that do not exist, but the development of science is to overturn the old erroneous theories, and many of the current truths will be overturned in a few thousand years, so 50 billion years cannot be said to be inaccurate, but it cannot be said to be accurate, I believe that human beings will develop to the technology that can preserve our original home. Typing is tiring, so let's get into trouble.

Not necessarily, if humanity does not cherish it, it will definitely perish.

Surely perish. The life span of the earth is only 2.4 billion years now, the life span of the sun is only 10 billion years (it is 5 billion years old now), and the life span of the universe is now confirmed to be only 20 billion years, but you ask ...... 50 billion years from now

In another 5 billion years, the sun will be gone, and then our world will certainly not exist, or certainly not exist in its current form.

Five billion years ago, the Sun was born along with the eight planets of the solar system. Millions of years ago, humans on Earth began to appear, and thousands of years ago, countries on Earth began to appear. Every object has its own life cycle, and the Earth and the Sun are no exception.

In 5 billion years, the sun will expand and become hotter, all the oceans and lakes on Earth will dry up, and living things (including humans) will become extinct due to lack of water.

As the sun continues to get hotter, bigger and redder, the earth will eventually be burned to ashes and swallowed up by the outer layers of the sun.

As it expands, the Sun begins to shrink again, eventually becoming a white dwarf of similar size to Earth.

This is the fate of mankind: either to be destroyed by the sun in 5 billion years, or to find a way out of the universe in 5 billion years, to other planets outside the solar system in the universe.

However, for human beings, 5 billion years is equivalent to permanence, and there is no time limit!

In 5.4 billion years, the energy on the sun will be depleted, and it may even swallow the earth!

Like all stars in the world, the sun is not permanent, it was born 100 million years ago, the sun has been incinerated in the group and 600 million tons of hydrogen atoms per second, converted into helium atoms, and the hydrogen in the core of the sun is limited, in the next 4 billion years, the sun will continue to convert hydrogen into helium, the increasing helium accumulation in the center of the sun will collapse its core, and then cause the fusion reaction to accelerate, which means that a lot of energy is announced from the sun's eruption, in 3.5 billion yearsAt this time, the earth's oceans will be jubilant, icebergs will melt, the moisture in the atmosphere will be evaporated, life will no longer be suitable for livelihoods, the earth will become as hot and boring as Venus, and the next situation will get worse, the energy on the sun in 5.4 billion years will be exhausted, its core will become extremely hot and fine, but the outer layer of the sun will swell, so the sun will be enough to swallow Mercury, Venus, and possibly even the earth, Even if the sun is not large enough to swallow the earth, once the fuel reserves of the sun are exhausted, the high temperature will completely burn our planet, and the sun will become unstable, causing it to start pulsing, each pulse will sell the mass of the sun, until there is a cool and fine core left, this core is called the white dwarf, the sun in the final life stage, that is, the white dwarf, with the passing of time, gradually cooling, darkening, at this time, the earth, will be completely unsuitable for the livelihood of life

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.

If the environment continues to deteriorate... Maybe less than 500 years · If only people were aware of the importance of the environment

The earth will be destroyed, and the human beings on the earth will definitely be extinct, but it is difficult to say whether the human race will be extinct.

The following views are basically the same as T9975879 and the Ice Blue 8 Elk: if the earth is no longer suitable for human habitation after a long time (thousands to tens of thousands of years) (first, due to some kind of disaster, such as the earth colliding with other planets and galaxies, the solar system orbiting to a bad region of the Milky Way, etc.; If 5 billion years later, the sun becomes a red giant and engulfs the earth, at the current rate of scientific development of human beings, then human beings should find a way to immigrate to aliens, so human beings will not become extinct. If the Earth's environment is no longer suitable for human life before there is no way for humans to carry out extraterrestrial colonization, the possibility of human extinction will increase.

But it is not absolute, with the current technology of human beings, it will soon be possible to create an artificial small ecological environment (as depicted in science fiction films) for human survival when the earth is not suitable for human habitation. In short, it depends on the extent to which the level of development of human science will be raised in the future.

That's later, and now we can do well.

If humanity continues to destroy without limits

Soon, human systems took matter and energy from the geographical environment. Generally, it is the production behavior of the primary industry, such as: grazing, deforestation, fishing and hunting, planting, mining and so on.

Human systems emit waste and heat into the geographic environment. The main behaviors are: life behaviors (washing water, physiological discharge, etc.); primary industry behaviour (pesticide spraying, animal physiological emissions, etc.); secondary industry behavior (greenhouse gas emissions, acid gas emissions, toxic liquid emissions from electroplating plants, industrial noise, etc.); Tertiary industry behavior (vehicle exhaust emissions, noise and glare in entertainment venues, etc.).

Emergence of environmental problems: the acquisition of material and energy by human systems from the geographical environment greatly exceeds the regenerative capacity of the environment; The waste and heat emitted by human systems into the geographical environment greatly exceed the self-purification capacity of the environment; Other human actions have a negative effect on human systems through the environment.

At present, the earth is suffering from environmental disasters such as overpopulation, industrial disasters (such as air and water pollution), acid rain and toxic compounds, loss of vegetation (including overgrazing, deforestation, and desertification), loss of wildlife, extinction of species, soil degradation, over-depletion of soils, erosion, and invasion of alien species.

The idea that the greenhouse effect caused by the increase in human industrial carbon dioxide emissions has led to large-scale climate change is interesting and controversial, and related research is still ongoing.

It is estimated that without an atmosphere, the average surface temperature of the Earth would be -18 degrees Celsius. [1] It is precisely because of the greenhouse effect that the average temperature of the earth is maintained at 15 degrees, but the current excessive greenhouse effect causes the average temperature of the earth to be higher than 15 degrees.

It is said that mankind has the ability to accomplish the feat of destroying the earth in 100 years

The future of the Earth is closely linked to the Sun, and due to the steady accumulation of helium ash in the Sun's core, the Sun's luminosity will slowly increase, increasing by 10% over the next 1.1 billion years and by 40% over the next 3.5 billion years. Climate models show an increase in radiation arriving at Earth, with potentially dire consequences, including the possible disappearance of Earth's oceans.

An increase in the Earth's surface temperature accelerates the inorganic carbon dioxide cycle, reducing its concentration to plant-lethal levels (10 ppm for C4 photosynthesis) over 900 million years. The lack of plants leads to the loss of oxygen from the atmosphere, and then the animals will also become extinct within millions of years. And even if the sun is eternal and stable, the continuous cooling of the Earth's interior will cause the loss of oceans and atmosphere (due to reduced volcanic activity).

In the next billion years, the surface water will disappear completely, and the average global temperature will likely reach 70°C.

The Sun, part of its evolution, will become a red giant in about 5 billion years. Model** will then expand the diameter of the Sun to 250 times its current diameter, or about 1 astronomical unit (149,597,871 km). The fate of the Earth is not clear, and by the time the Sun became a red giant, it had already lost about 30% of its mass, so if the tides were not taken into account, when the Sun reached its maximum radius, it would be in orbit about an astronomical unit (254,316,380 km) from the Sun, so the Earth would escape outside the Sun's loose atmospheric envelope.

However, most, if not all, of today's creatures will be destroyed by excessive proximity to the Sun. However, recent simulations have shown that the Earth's orbit will be attenuated by tidal action and drag, which will cause the Earth to fall into the solar atmosphere of the red giant and be destroyed.