Do you know how long the Earth can live?

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 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. Then they will not know, but they will ask our children and grandchildren.

When the sun is sacrificed, the earth is also fast.

The key is how long solar energy lives.

The only answer to this question is to ask the earth!

。。。It's really an abstract question, but it can also be philosophically - -

How long will the earth live. No one knows for sure, maybe permanent, maybe temporary, that humans don't know, and neither does the biological world.

I guess I can live a 'hard drink'.

The Earth is now 4.6 billion years old, bigger than the sun and other stars, so take care of it.

The Earth will live until the Sun turns into a red giant and swallows the Earth, which is about 5 billion years away, and our Sun is still in its prime! Rest assured.

The Earth's lifespan is about 100-12 billion years, and it is currently about 4.6 billion years old, with billions of years to go.

The Earth has been around for 4.6 billion years and is expected to exist for about another 10 billion years.

It is estimated that the Earth has survived for 4.6 billion years. But how long can it live?

Scientists believe that if the earth is allowed to move freely, I am afraid that it will exist forever, but to.

If there are other external factors that interfere with it, the earth may have an end of life.

The external factor is first of all the sun, because it is the closest planet to the earth and can have a destiny on the right earth.

That is to say, all energy and power on the earth come from the sun, and once the sun has three long and two short, it is inevitable.

Damage to the planet. Before the 30s of this century, people always thought that the sun would one day burn out and turn white.

The orange turned red again, and finally became a dark star that was silent, but its brilliant life was gone. To Ben.

In the 30s, when physicists learned the mystery of the sun's light and heat, the situation was very different.

It turns out that the sun's energy comes from its thermonuclear reactions, and the sun's life will pass through the gravitational contraction phase, the main order.

Star phase, red giant phase, and compact star phase. The main sequence phase is the period of stability of the Sun. This.

The phase will last for 10 billion years. At present, the sun is only halfway through and is in middle age. Once the sun arrives.

The red giant phase, 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.

There may be a brother - a companion star of the Sun, which orbits the Sun day and night, and every 26 million years, it turns to the closest place to the Sun"Make waves", its strong gravitational pull will cause many comets.

1 billion comets will rampage in the solar system, and the Earth and other planets will become these comets.

Star's"Target".If the mass of the comet that collides with the Earth is large enough, the consequences are unimaginable: the light is born.

extinction and ecological upheaval; Heavy landslides and earth cracks, the earth"Broken bones".However, this one may give to the earth.

The unpredictable solar companion has not been discovered, but many scientists believe in its existence.

Depends on the lifespan of the sun. Once the Sun becomes a "red giant", it has a chance to swallow the Earth. It is calculated that the sun has a lifespan of about 12.3 billion years, so the earth has about 50 years to live.

The Earth can exist for a total of 3 billion years and is now in its youth, like the sun at 8 or 9 o'clock.

The future of the planet depends on the sun. After about 5 billion years, the hydrogen content in the Sun decreases, the Sun begins to expand, the surface temperature decreases, and the volume increases dramatically, turning into a red giant that will swallow the Earth and several other planets in orbit.

Although the earth will not die today or tomorrow, it is still too fragile, so let's cherish the earth now.

The history of human beings can be traced back millions of years, while the history of the real conquest of nature is only a few thousand years, and the gradual development of human civilization is nearly 2,000 years. So how long can humans live on Earth? Is there an answer now?

It's safe to say that there is an answer now, it's about 1.1 billion years.

According to the research of modern astronomy, the lifespan of stars similar to the size of the sun in the universe is generally about 10 billion years, and the sun has existed for 4.5 billion to 5 billion years. Writing this, many people will say that if there is a sun, there can be human beings, then the earth still has 5 billion years to live. Actually, if you think simply, an elderly person must be completely healthy and free of diseases?

No way. The same goes for the sun. With the depletion of hydrogen, the sun will be more unstable in early old age, when no one can guarantee that the sun will not change suddenly; You must know that many small changes in the sun pose a great threat to human beings, such as sunspot eruptions, solar wind, magnetic storms, and so on.

Therefore, it is accurate to calculate that human beings can still exist under the protection of the sun for about 1.1 billion years.

In 5 billion years, after the sun is completely depleted of hydrogen, the sun will expand first, and the boundary will be close to the earth, and it will completely engulf Mercury and Venus. At this time, the sun is called a red giant, and it is very hot, completely evaporating the water from the earth. Without water, life generally does not exist; Without water, the temperature of the earth is also very high.

The Sun then shrinks into a white dwarf. At this time, the temperature of the sun is very low, and the temperature of the earth will also be close to absolute zero. It is impossible for life to exist.

So, humanity still has 1.1 billion years to find another habitable planet. Such a long time is enough. In a few hundred years, mankind should have deciphered the theory of the nature of physics (i.e., understanding the nature of matter in the world and the laws of interaction between matter).

At that point, traveling in space will be a breeze.

I hope that each of us can contribute our own strength to promote the development of human civilization!

The "lifespan" of the Earth depends on the duration of the sun's nuclear fusion, which is about 5 billion years.

At present, the core of the sun is in a period of hydrogen fusion, and the light pressure and gravity of hydrogen fusion are balanced to maintain the shape of the sun. When the hydrogen in the Sun's core is insufficient to sustain fusion, the light pressure weakens and the Sun collapses toward the center until the pressure is strong enough to ignite helium fusion. Once helium fusion begins, the Sun transforms from a main-sequence star into a red giant, expands outward, and will eventually engulf Earth.

Consider, the remaining amount of hydrogen. The sun can also be stable for 5 billion years. Therefore, the earth will survive for about 5 billion years.