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7 months ago (03/01/22) 470 Views

Is the star immortal

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The nature of any substance with molecules or atoms or mass is to attract each other. The molecules of hydrogen gas in space begin to form huge spheres as they come closer to each other. As more molecules accumulate, the pressure in the center of the sphere increases, and as the pressure increases, so does the temperature. Thus, when this pressure and heat reach a crucible point, the hydrogen molecule begins to transform into helium molecule through a nuclear fusion reaction.

When one helium molecule is synthesized from two hydrogen molecules through fusion, the mass of one helium molecule is less than the total mass of these two hydrogen molecules. The mass that is lost is converted into electromagnetic radiation or electromagnetic waves according to the formula E = mc ^ 2. Meanwhile, the molecules of the gaseous sphere want to be compressed in the center by the effect of their mutual attraction and gravity, but the force emitted by the nuclear fusion reaction of the center prevents this phenomenon. Thus an equilibrium exists and a star is born. The larger the size of a star, the faster it will burn out. The lifespan of small stars is much longer.

star immortal pictures
Photo: constellations

So fusion of helium molecules occurs when there is no more hydrogen in the star to conduct fusion in the center of the star. Carbon is made from helium. Thus oxygen is again from carbon. Iron is fused from oxygen. So it is not possible to create new elements by fusion from iron. As a result fusion stops. Stopping means that the force that for so long has been fighting with the gravitational ball of the molecule to prevent the star’s gas from being compressed at the center is no more. Now only the gravitational force is effective.

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Now what will happen to the fate of the star depends on its mass.
The mass of different stars can be compared into the mass of the sun into three categories.

* The first 1-8 solar masses.

* Second 8-17 solar mass.

* Third 18+ solar mass.

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1-8 solar masses

First-class stars run out of energy, and nuclear fusion at the center ceases, causing the center’s temperature to drop. On the other hand, the atoms on the outer side of the star are still hotter than the center, so the volume increases. At this time the stars are huge. This stage is called Red Giant. Our sun will also become a red giant about 4 billion years from now. Then its size will increase so much that it will extend to the Earth’s orbit. Note that the distance of the earth from where the sun is now about fifteen million kilometers!

Anyway, as it expands, it will continue to emit substances in the form of radiation and plasma from its outer layer. Its center of gravity can no longer hold its outer layer. In this way, once again, there will be nothing in the outer layer. The rest of the center or core material will have a much higher temperature. So the star will lose its outer layer and will have a very hot center named White Dorf. The reason for saying white is that the hotter the substance, the whiter the color. You can try heating an iron in a blacksmith shop or at home. The more hits, the brighter and redder as the temperature decreases.

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8-17 solar masses

Although their fusion has stopped, since the mass is higher, so is the mass of the center. More mass means stronger attraction. Since fusion is closed, there is no mechanism to prevent it from accumulating in the outer layer center. When these 8-17 solar mass stars run out of energy and fusion stops, the whole star will accumulate in a moment in the center of the outer layer. This will cause an explosion called a supernova. Supernovae will produce a huge amount of energy that is more than the sun’s lifetime. The center will remain after the supernova. However, since its center is large, its strong gravitational ball will produce neutrons by combining electrons and protons of the atomic molecules in the center. During this time neutrinos will be created which will go into space through radiation. So there will be nothing but neutrons at the center of the star. This is called neutron star. The concentration of neutron star is so high that one teaspoon of neutron star materialMass 10 lakh tons !!!

The neutron star is the end result of group two.

18+ solar mass

Even if their fusion is stopped, they will be supernovae like neutron stars. However, as their mass is more extensive, so is the mass and gravity of their center. Their gravity is so high that even light traveling at a speed of 3 lakh kilometers per second cannot get out of its gravity. That is, it keeps everything stuck. Its name is Black Hole. This black hole is the densest object in the universe.

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How thick can it be?

If you take one teaspoon of matter from a black hole, its mass will be more than the mass of the earth.

Black holes continue to melt through Hawkings radiation. However, this process is so slow that it will last a lifetime.

The stars in the night sky will never be the same again.

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