How long does it take for the sun to collapse and will a black hole form after the collapse?

Geologists speculate that the sun has been shining for 5 billion years. It is estimated that in another 5 billion years, most of the sun's hydrogen will polymerize into heavier helium, helium needs a higher temperature to polymerize into carbon, because helium is heavier, its gravitational pull will be stronger, so that the pressure in the center of the sun will increase, when the gas pressure increases, according to the gas law, the temperature will automatically increase, when the sun is mostly helium, its central temperature will increase by 10 times to the present, reaching 100 million degrees, helium will polymerize into heavier carbon, and then due to gravity will produce a higher temperature and polymerize carbon into nitrogen. This repeats progressively to heavier substances such as oxygen, all the way to iron, and at high temperatures, all matter becomes gases.

When the sun's helium begins to coalesce, it will become a giant helium atomic bomb, expanding its diameter by more than 100 times. Due to excessive expansion, its surface temperature will decrease, causing the color of the sun's surface to change from the current high-temperature white to low-temperature red, becoming a "red giant". For example, if a star has the same mass as the Sun, the atoms will merge into heavier matter in order until iron, and the energy consumed to coalesce into iron is equivalent to the energy produced, so there is no superfluous energy.

As soon as the sun has no heat**, it begins to cool and shrink, and at the end it puts a high pressure on the center of the sun. It is so high that the outer electronic shell of the atom is crushed, so that the electrons no longer rotate outside the nucleon, and the electrons and nucleons become a high-density mixture with no regular structure, and then the sun becomes a "white dwarf", which gradually cools and dims, and becomes a "black dwarf". At this point, the sun's activity is completely over.

If a star has 10 times the mass of the Sun, the temperature will rise very quickly during the convergence process, causing a "supernova" **, and a very dense neutron star will form at the center of the large **. If a star has more than 30 times the mass of the Sun, a black hole may form at the center of the large **. When the Sun became a red giant, its apparent diameter increased by more than 100 times its current size.

From Earth, the sun almost fills the sky during the day. It's scary. Although the surface temperature of the sun is lower, because the area of the sun has increased tens of thousands of times and it is close to the earth, the excessive energy of the sun shining on the earth makes the ground too hot, the water on the ground turns into steam, and the ocean becomes a desert, and it is impossible for us to survive here.

It is estimated that in 5 billion years, the sun will turn into a terrible red giant, and this will be the end of the world.

After 5 billion years, the Sun will burn out the last of its energy, forming a red giant and then engulfing Mercury, Venus, and Earth. It then shrinks into a white dwarf star that will not become a black hole. Compared to other stars, the Sun is too small.

1. The sun doesn't**. Second, the sun does not become a black hole.

The mass of the sun is too small, and although it can become a red giant in the later stage of evolution, it will not. Scientists say that in about 5 billion years, the sun will enter old age, expand and become larger, and its diameter will be larger than the diameter of the current orbit of the earth, that is, the sun will engulf the earth in it. Then, the outer gas of the sun's expansion will slowly dissipate into space, leaving only the central solar core, which is a hot white dwarf.

When the white dwarf slowly cools and darkens, it becomes a black dwarf and disappears.

The Sun can only become a white dwarf, not a black hole. Because all that can become black holes are massive stars, which are at least 10 times more massive than the Sun.

The sun cannot become a black hole. The mass of the sun is too small.

At that time, the earth had been swallowed by the sun.

Not necessarily, it depends on the mass of the star, the higher the mass will be the greater the probability of becoming a black hole, some will collapse into white dwarfs, and some will collapse into pulsars. Generally, when a star reaches the later stage of evolution, it has to violently eject a large amount of material outward, and the material forms a nebula, such as a crab-shaped nebula, and the ** residual nucleus becomes a dense celestial body - a white dwarf star and a neutron star.

Black holes are also called "star graves", as early as 1789, French scientists have put forward this hypothesis about black holes, in 1965 scientists observed the X-rays of the white swan constellation, found a blue star, there is an invisible companion star near the blue star, which is 10-22 times the mass of the sun, which is the first time that mankind has found evidence of the existence of black holes.

Massive stars collapse to form black holes, and the strong gravitational pull makes it difficult for any object, not even light, to detach itself. Is it possible for our sun to become a black hole? An American astrophyser said that our solar mass is not very large, and it will collapse into a white dwarf in 6 billion to 10 billion years at most.

There is a good chance that our Sun will become a white dwarf in the distant future, and the density of an ordinary white dwarf is about 175 kilograms of cubic centimeters, while the density of a dense white dwarf is about tons of cubic centimeters. Scientists currently estimate that there are about 10 billion white dwarfs in the Milky Way. Neutron stars are smaller, but extremely dense, more dense than white dwarfs, with a central temperature of about 6 billion to 6.5 billion degrees.

Scientists have long calculated this state of affairs.

If the Sun collapses into a black hole in an instant, but only the Sun collapses on its own, with no other planets or matter involved, then the sun will still shine on the Earth for a few minutes after the Sun collapses. After about 8 minutes and 20 seconds, darkness descended on the earth, and the earth entered an eternal night, and there was no more light. The Earth will be completely frozen in a few months to a few years.

Other than that, it's business as usual on Earth.

Since only the gravitational collapse of the sun itself occurs, the super gravitational pull of the black hole only affects the near sun. In terms of the curvature of space, it is like there was a sinking crater in the original space (the curvature of space-time caused by the sun's gravity), after the sun collapsed into a black hole, the pit became deeper and bottomless (hence the name "black hole"), but the size of the pit did not change. So the space-time structure of the solar system will not change, and all the planets in the solar system (including the closest to the Sun and Mercury) will still continue to orbit around the "vanished" Sun in their original orbits.

In other words, after the sun collapses into a black hole, the mechanics of the solar system continue to work as usual.

If it is a moment, the gravitational pull of the sun will increase greatly and it will no longer shine on the sun.

In the first seven minutes, the Earth's light is as usual, but the Earth's orbit is far away from its normal orbit, moving closer to the Sun, and after seven minutes (if the Earth is still around), the Earth will be plunged into darkness (fearing that human beings will be in turmoil), and finally swallowed by the black hole, which will emerge from the other end of the black hole, the white hole, and exist as elementary particles in another parallel world.

Not only the Earth, but the entire solar system will be destroyed.

No, the Chandraseca limit is the limit between a white dwarf and a neutron star, and a mass greater than this will collapse into a neutron star.

The limit of about 3 times the mass of the Sun is the boundary between a neutron star and a black hole, and the main sequence stage of a star may require dozens of times the mass of the Sun, and finally throw away the outer gas, leaving more than 3 times the mass of the Sun to become a black hole.

Atomic changes:

When the star is about to go out, the outward pressure gradually weakens and begins to collapse under the force of gravity. When the atoms collapse to the point where they are all next to each other, the electron degeneracy prevents further collapse, forming a white dwarf. If the mass is greater than the mass of the Sun, it will overcome the electron degeneracy pressure and continue to collapse, crush the atoms, squeeze the electrons into the protons, and form a ball composed of neutrons, and when the neutrons are also close together, the neutron degenerate pressure prevents the continued collapse, that is, the formation of neutron stars.

When the mass is greater than 3 times the mass of the sun, the neutron degenerate pressure cannot resist the strong gravitational force, the star continues to collapse, and after the neutron degenerate pressure, there is no force that can stop the collapse, and the star will continue to collapse, squeezing all the microscopic structures, forming an infinitesimal particle.

The spherical space around this mass with a radius of about 1 km is the black hole boundary.

If the sun expands to the point where it swallows up the planets of the solar system, then by the time he dies, he will be able to form a black hole.

Except for the second time, it can't, that's what the upstairs says.

Yes, when the sun's energy is released, it will collapse into a box of dense celestial bodies, becoming a black hole that will swallow the earth.

The sun will collapse into a black hole, but the process is extremely long, and it can take hundreds of millions of years or more. If the sun turns into a black hole, then the earth will be swallowed. But I think that by then, our technology will already be able to travel through the universe, even if we can't save the bottom of the earth, but we can fly away from the earth ourselves.

If the sun burns up after many years, it will also collapse into a black hole, and it may also become a dead star. If it becomes a black hole, the Earth is so close to the sun that it will definitely be swallowed.