Why star dies?????
Before knowing about why star dies we should have a little knowledge about stars
Stars-:Stars are mostly balls of hydrogen gas that came together from a nebula of gas and dust. They generate their energy through the process of fusion.
Fusion-the process or the result of joining different things together to form one).
This is where atoms of hydrogen are combined together to form helium atoms. And in the process, the star generates a tremendous amount of energy in the form of radiation.
Stars Like everything else in our universe, a star has a ‘lifetime’. Stars are born in a cluster of gas and dust called a ‘nebula’. Once pressure builds up in the nebula it will bring the gas and dust together and produce what is called a ‘protostar’. The heat inside this protostar is pretty intense and when it gets hot enough, it can explode into a star. The core or ‘center’ of the star is a swirl of pressure treated gases that are constantly battling to keep a balance. It is thought that this entire process takes about 50 million years.
You would think that the bigger the star, the longer it would exist, but it’s really the exact opposite. Larger stars burn up their hydrogen core much more quickly that small and medium sized stars.
If you look at a dying star, you would see that the light actually pulsates and can get larger. This is because it is no longer stable and is using everything it has to try to keep from dying. You might be surprised to find that some of the materials that it is creating at this point includes helium, silicon, and oxygen. It will continue to create materials until it gets to one point. When it creates iron, it’s all over. Once the core turns to iron, it doesn’t have the ability to ‘burn’ anymore,
Once the helium is used up, a medium-mass star like our Sun just runs out of fuel. It can no longer sustain a fusion reaction.
Stars die because they use up all of the fuel that allows a star to undergo fusion, which is why a star is so flipping (seems to be bright) hot.
If you look at a dying star, you would see that the light actually pulsates and can get larger. This is because it is no longer stable and is using everything it has to try to keep from dying. You might be surprised to find that some of the materials that it is creating at this point includes helium, silicon, and oxygen. It will continue to create materials until it gets to one point. When it creates iron, it’s all over. Once the core turns to iron, it doesn’t have the ability to ‘burn’ anymore,
Once the helium is used up, a medium-mass star like our Sun just runs out of fuel. It can no longer sustain a fusion reaction.
Stars die because they use up all of the fuel that allows a star to undergo fusion, which is why a star is so flipping (seems to be bright) hot.
The star, in a desperate but futile attempt to stay alive, now fuses the helium into carbon, and once that happens, the carbon fuses into oxygen. During this process, the star starts to swell, and that is what we call a “red giant”.
Red giant-:During a red giant phase, the star fuses the helium from all the burned hydrogen to form carbon and oxygen.
Once a star fuses the oxygen into iron, it’s all over. the star breathes its last breath as the it expels the outer layers of itself and leaves behind a dense, earth sized remnant of a star called a
white dwarf.
White dwarf-:The core of a white dwarf star surrounds itself with layers of hydrogen, which still burn, continuing to fuse.
Once this happens, the star is officially dead. Fusion no longer happens, and the white dwarf remnant slowly turns into a black dwarf over billions of years.
So finally we get that Stars die because they use up there fuel. It is somewhat similar to a car. Once a car uses up the last of its gas, it stops. Luckily though, cars don’t blow up once the fuel in them is gone.
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