How long will the sun and the earth 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.

All for 5 billion years, because the Earth itself will not be destroyed, and the Sun will burn out, turn into a red giant, and swallow the Earth.

As a star, the sun and eight planets, including the earth, form the solar system, and the sun is the core of the solar system. As a star, the sun provides light and heat to the earth, and is the source of the earth's energy. As we all know, stars have a lifespan, so how long can the sun exist?

Through research, scientists have roughly estimated how many years the sun has existed, and the sun has existed for about 5 billion years since its birth. In these 5 billion years, the sun has never stopped shining and heating, and the whole sun is carrying out nuclear fusion all the time, because the volume and mass of the sun are too large, so after 5 billion years of consumption, the sun is still in the "prime" stage!

According to astronomers' calculations, according to the current amount of radiation from the sun, the sun can continue to exist for nearly 5 billion years if there are no accidents! In other words, the life span of the sun is about 10 billion years, which is an immeasurable time for human beings!

If we lived to 5 billion years, what kind of sun would we see? At that time, the sun will first grow in size and become a red giant after running out of nuclear fuel inside. Red giants continue to shine by burning nuclear fuel in the outer layers of the sun.

When all the fuel is burned out, the material in the outer layers of the Sun will quickly shrink towards the center into a white dwarf star with extremely dense atoms under the influence of the gravitational pull of the Sun's own massive mass. White dwarfs continue to glow faintly with the little residual heat from the Sun. After the last bit of heat is exhausted, the Sun will eventually turn into an icy black dwarf that does not emit light or heat a front.

Because the Sun is not massive enough to be a black hole, a black dwarf is the ultimate fate of the Sun!

For a week, because the sun is the main heat of the earth, after losing the sun, humans will soon freeze to death.

Everything on the earth needs sunlight to grow, and I personally think that if the sun is gone, life on the earth will not survive for a long time, at most a month. Because without the sun, many plants will die, humans will have no food, and human life will always be in a state of darkness.

If the sun were gone, life on Earth would survive for no more than a month, because plants could not photosynthesize and the world would fall into darkness, oxygen in the air would only decrease dramatically, and the temperature would continue to drop.

The vitality of the creatures on the earth is very tenacious, if there is really no sun, then the earth will be irreparably destructive, in the case of all living things are difficult to survive, it may not be a year for the creatures on the earth to survive, ushered in destruction, everything ceases to exist.

No ifs! The sun is forever, and the man is the sun.