How long will the Earth survive the sun?

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.

It is said that the earth still has a life span of 5 billion years, and so is the sun, because the sun will transform into a red supergiant in 5 billion years, at that time, the radius will exceed the current orbit of the earth, and the earth will not be able to have any life, but according to records, there will be an asteroid that will hit the earth in 2126, and the volume is more than 10 times the volume of the asteroid that destroyed the dinosaurs 65 million years ago.

Humanity will never see the destruction of the planet.

I can't see it, so let's take care of what is in front of you.

The Earth is not clear, but the sun is still 5 billion years old.

Without the sun, humans can live for about 1 year. The sun disappears suddenly, and the earth does not cool down immediately due to the warming effect of the atmosphere, but the temperature difference between the day disappears (the temperature at night is generally 10 degrees lower than during the day), and the temperature difference between the four seasons also disappears. The Earth's surface temperature drops to 0 during a month's drive and to 0 after half a year.

In the year it drops, and by this time, liquid water no longer exists.

There will be other changes to the Earth after the sun disappears:The entire solar system lost its gravitational pull, and the nine novae no longer moved around the sun. After 8 minutes, the Earth began to move in a straight line.

And the moon will still be a satellite of the earth because of the gravitational pull of the earth, but we can no longer see the moon because the moonlight is the reflection of the sun.

The Earth has survived for 4.6 billion years. Humans were born 5 million years ago. That is to say, 60 million years after the extinction of the dinosaurs, human beings were born, and humans were differentiated from the animal kingdom, and taxonomically, homo sapiens belong to the subphylum Vertebrates, Mammalia, Primates, Anthropoids, and Homo.

About 4.5 million years ago, humans and apes began to diverge, giving rise to Australopithecus ramanacus, which later evolved from Australopithecus australopithecus 2 million years ago, and then further developed into modern humans. Human is an umbrella term for human beings. Biologically, humans are classified into the general kingdom eukaryotic kingdom Eukaryotic subkingdom Zoological kingdom Posterior Mouth Animals Total phylum Chordates Vertebrate subphylum Amniotic general order Mammalian subclass Euzoomia subclass Primate ape suborder Narrow-nosed monkey suborder Homo sapiens subfamily.

Human beings can be defined on biological, spiritual, and cultural levels, or a combination of these definitions. Biologically, man is classified as a hominida, homin, hominid, a higher animal. On a spiritual level, man is described as being able to use the concept of a variety of souls that are believed in religion to be associated with divine power or spiritual immortality.

People:"Able to manufacture delicate tools, and be able to skillfully use tools for labor, have rich thinking ability, have the ability to judge that there is no conflict with the actual situation and conflict with the actual situation, have the ability to initially maintain the earth's ecosystem, have the ability to create and control the restoration"People should live in harmony with each other, and trust and communication are the most basic ways of survival between people. Evolutionary studies suggest that humans originated from forest apes and evolved step by step from primates through a long evolutionary process.

DNA and fossils prove that humans originated in Africa about 3 million years ago. Compared to other animals, humans have highly developed brains, complex abstract thinking, language, self-awareness, and problem-solving skills. The erect structure of the human body allows the human forelimbs to move freely, which allows the intelligent human to master the ability to use tools far more than any other species, and ultimately to develop great labor ability and creativity.

Man is a higher social animal.

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.

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.

Don't worry, the Earth will definitely last for tens of billions of years.

It should outlive us.