Death of a Star
All stars are born and all stars die. Stars have different death phases depending on how big the star is when it is born. Small stars don't have a very exciting death. They aren't massive enough to fuse helium so after it is done fusing hydrogen, it cools off and turns into a rock floating out in space. The bigger the star, the more spectacular the death is. Polaris is a super giant so it will have an exciting death. Follow these steps to learn about the death of Polaris
Once a star is starting to die, it is running out of hydrogen to continue nuclear fusion. Depending on the size, it might be able to continue fusing helium right after it is done fusing hydrogen. Only the most massive stars have enough mass to continue nuclear fusion right after hydrogen. If the star isn't massive enough, it will run out of hydrogen. Then it won't have any energy to stop gravity from crushing its core. It will then start to crush the core and that will make it heat up and it will have enough pressure and heat to start up nuclear fusion. This process can continue for a while making the star expand and contract.
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A big star like Polaris will have an exciting death. After its is done with nuclear fusion, gravity will take over and crush the core into an extremely dense object. If the star is massive enough it will form a black hole which is so dense not not even light which travels 186.282 miles in just one second, but if it is not massive enough it will turn into a neutron star. A neutron star is a star that explodes so violently that is loses and electric magnetic charge it has making is all neutrons. These neutrons are so massive that their gravity forces them together into an extremely dense object. This object is so dense that just a tablespoon amount of it can drop right through the earth!
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