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Protons and eletrons start to form a cloud of hydrogen. This cloud has LOADS of mass and are GIGANTIC. Due to gravity, the atoms around it get attracted to the cloud too. But there is a repulsion between atoms which gets them not into each other. These atoms of hydrogen get attracted to each other hardly due to gravity. These atoms start getting crushed. And then nuclear fusion takes place. 4 hydrogen atoms get together to make 1 helium atom(helium was not like you can take it from anywhere, it had to be created through nuclear fusion).ย
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Sometimes this white dwarf starts revollving itself with another main sequence star. This is called binary system. The white dwarf starts to pull energy from the main sequence star, and something (electron degeneracy ressure is defeated by gravity) happens and then the white dwarf collapses. This...
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.., The star can get collapsed into a neutron star. This is the most dense star in the universe. And they rotate very fast (due to conservation of angular momentum). Here the gravity is so immense that nearly 90% of the star's electrons get fused into neutrons. A neutron star of ...
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..., the only thing fusing is the outskirts of the core. Now these hydrogen particles are like "We don't have any core to stick to, where do we go?". So they start repelling each other. Now, as we know, fusion gives radiation. As the star starts to cool down (as more of its mass gets fused), it s...
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This is because the larger the star, the higher the gravity, the higher the amount of hydrogen to be burnt, the faster you burn, the faster you die. This shows how much imp...
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So n high mass stars, after the red giant phase, there is still a hell of a helium to burn. So, this helium slowly fuses to carbon, carbon to something and on and on and on untill (!) you reach Iron. Because iron is very hard to fuse. So here the core, gets done. Now, as there is no radiation pus...
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As the core is completely fused, it becomes trapped. Its outer layers are gone. This lonely core is called the white dwarf. For a low mass star, this is where you die. The helium particles in this star just radiate outwards slowly and slowly. After some time, they have no power t...
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3. As the fusion takes place, the radiation radiating outwards from the fusion takes the particles with it off the gas cloud and the star may never form. Because the radiation is in the oposite direction of the gravitational pull to collapse. When both are equal, it's called equillibrium.
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Jeans mass- this is the minimum mass required for a gas cloud to collapse into a star.
In middle of being a gas cloud and being a star, there is a protostar phase. Here the star is not really a star but there is some gas that has been concentrated. Lots of things can happen...
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Dark matter, theory of relativity, dark energy, negative mass, end of the universe, The Big Bang, 'What is beyond the universe?' etc. If you love such things, Welcome to your home.'
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