Does the sun disappear and what happens if it does?

The sun doesn't go away. But it will exit the main sequence after its own nuclear energy burns out, become a red giant, then shrink due to its gravitational pull and throw the outer material into space, and finally, the sun's inner core will shrink into a very dense, faint and cold star, a white dwarf.

But landlords don't have to worry, that's 5 billion years from now. At that time, if humans still existed, they would have been able to find their own new habitat in another "solar system".

In about another 5 billion years, the core of the Sun will shrink again as soon as it runs out of "fuel". As a result, the temperature soared again, causing the outer layer of "fuel" that had not been burned to "burn" up. At this time, the sun expands violently and becomes a "red giant".

The sun will swell so much that the sun will "swallow up" both Mercury and Venus. The Earth's orbit is exactly where it is on this inflated surface of the Sun. At this time, the earth will be roasted into a cloud of lava, even if it is not "swallowed" by the blazing sun.

But at the same time, there will be other asteroids that will become habitable for humans, and perhaps they will be the future refuge of humanity.

The "red giant" stage is about 1 billion years old. Then, all the "fuel" that could be "burned" ran out, and the red giant began to shrink again, becoming smaller and smaller, and only about 1/100,000th of its current volume stabilized. Although the surface temperature can be as high as 10,000 degrees, the surface area becomes smaller, and the heat emitted is greatly reduced, at which time, the sun enters the "old age" period, becoming a "white dwarf"-like celestial body, with high surface temperature, small size, and high density (10 tons per 1 cubic centimeter of matter).

Since there is no internal energy source, this "old age" cannot last forever, but gradually cools down, and finally becomes a "black hole" that is extremely dark.

As for those humans who have taken refuge on distant planets, they will probably have to take a spaceship to find a solar system. Fortunately, this is 5 billion years from now, and mankind will definitely be able to solve this problem with advanced science and technology.

Yes, or it will exist in another way.

After 5 billion years, the Sun will no longer be able to shine on the Earth properly.

Then in hundreds of millions of years, it will become a red giant, a white dwarf, a neutron star, and finally a black hole.

Every star has a lifespan, and the Sun is no exception.

Scientists estimate that the Sun will run out of energy in another 5 billion years, when the Sun will expand violently, engulfing six planets in the Solar System (including the Earth), and then shrink violently into a white dwarf, and the Earth will disappear with it.

When all the sun's hydrogen fuses into helium, it will expand, engulf the entire solar system, and then contract, carry out the fusion of helium, until it fuses to iron, it can no longer provide the energy needed for iron fusion, so the fusion reaction cannot occur, so the final fate of the sun will be a big iron ball. By this time, the solar system was long gone. As for the fate of the universe, there are three possibilities:

1 Continue. 2. Expansion stops.

3. Shrinkage.

In another 5 billion years, the fuel inside the sun will be burned out. The sun will fall, and finally.

At night, it will disappear, and then the moon will appear.

When the sun goes down, it's gone.

Yes....It is said that after hundreds of millions of years.

In fact, the sun does not disappear, every sunset, the sun disappears below the horizon because of the rotation of the earth, and at night the earth turns to the side facing away from the sun because of autobiography, which is night, and the other side of the earth is facing the sun, which is daytime.

The Earth rotates from west to east on its axis of rotation, rotating counterclockwise from the north pole and clockwise from the south pole.

The Earth's axis of rotation is angled to the ecliptic plane, perpendicular to the equatorial plane. The Earth's rotation is an important form of motion of the Earth, with an average angular velocity of rotation in degrees and a linear velocity of 465 meters and seconds at the Earth's equator. It takes 23 hours and 56 minutes for the Earth to rotate around and increases or decreases by 3 to 4 thousandths of a second every 10 years.

1. The sun will also go out one day, and the sun is not eternal. The sun, like everything else in the world, has its birth, prime, and old age. The sun is young and vibrant, and after 5 billion years of dust scarcity, the sun is entering its old age.

At that time, the sun would shrink to the size of the Earth, and the core of the sun would lose its luster due to the cold light, and finally turn into a black dwarf star, disappearing in the darkness of space.

2. The sun is the central celestial body of the solar system and occupies the overall mass of the solar system. The eight planets in the solar system, asteroids, meteors, comets, outer Neptune objects, and interstellar dust all revolve around the Sun, which revolves around the center of the Milky Way.

If the sun disappears, first of all the solar system.

The main gravitational pull will disappear, and the Earth will maintain a constant speed, flying in a straight line away from the center point of the Sun until it is captured by the next gravitational force or collides with another star.

When the sun disappears, we are still able to see the sun in the sky within 8 minutes of the sun disappearing, since it takes about 8 minutes for the light to travel to the earth. Due to gravitational pull.

The speed is about as fast as the light makes the noise, so we have 8 minutes before disaster strikes. After 8 minutes, we will not be in complete darkness. The stars in the universe still shine, and the electricity on Earth is still there, so as long as there is energy, the city will not be completely dark.

Even the other planets of the solar system will remain visible for a short period of time. Photosynthesis occurs when the sun disappears for 8 minutes.

will stop completely. Most small plants will die within a few days. What we need to worry about the most is the Earth's surface temperature, which will drop to 0 degrees Celsius in a week.

After a year it will be reduced to -100 degrees Celsius. The Earth's oceans will become colder and colder, eventually forming ice disturbances and making the Earth a frozen planet.

The Sun is a star in space, and the Sun is the central body of the solar system and occupies the overall mass of the solar system. What is the solar system? The solar system consists of eight planets, asteroids, meteors, comets, outer Neptune objects, and interstellar dust, with the Sun as its center.

It is about 1.3 million times the size of the Earth; Its mass is about 330,000 times that of the Earth.

What is the sun made of? About three-quarters of it is hydrogen (Hydrogen (hydrogenium) is a chemical element with the element symbol H, which is placed first in the periodic table. The usual elemental form of hydrogen is hydrogen, which is colorless, tasteless and odorless, and is a highly flammable gas composed of diatomic molecules, and hydrogen is the lightest gas.

Hydrogen is used in medicine to ** diseases. The rest is almost all helium (Helium, the least reactive element, is a rare gas. Helium is normally a colorless, odorless gas and is the only substance that cannot be solidified at standard atmospheric pressure.

The main applications of helium are as shielding gases, working fluids in gas-cooled nuclear reactors, and ultra-low temperature refrigerants. ), including oxygen, carbon, neon, iron, and other heavy elements with less than 2% by mass

The Sun is a yellow dwarf. Yellow dwarfs have a lifespan of about 10 billion years, and the Sun is currently about 100 million years old. After about 50 to 6 billion years, the hydrogen element inside the sun will be almost completely depleted, and the core of the sun will collapse, resulting in a rise in temperature.

The sun doesn't**.

Or maybe the outer layer of the sun will eventually drift out, leaving only the inner core in place, and it will become a white dwarf, gradually starting to cool or become pitch black. If you observe the death of the Sun from a distance, it will feel quite spectacular, and the outer layers of the Sun will become a planetary nebula that has existed for tens of thousands of years.

Some people are worried that the sun will happen**, the sun will not change, although its lifespan is limited, but it will not change in the end. Some stars do occur in the final stage**, which is called a supernova explosion, but only a few planets with massive stars will occur, and the mass of the Sun will not reach this limit, but its fate will be different.

In the next issue, you will ask questions and I will answer [witty].

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 in a month and to half a year later.

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 stopped moving around the sun and began to go their separate ways. After 8 minutes, the Earth began to move in a straight line.

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 a reflection of the sun.