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How will or sun die?

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Anonymous

14y ago
Updated: 8/19/2019

Our sun will die from a build up of carbon ash, accumulating in its core.

Right now, our sun is being powered by a process of nuclear fusion. In the fusion process, two hydrogen atoms are combined to form one atom of helium. The combining of the hydrogen atoms creates immense amounts of heat and energy, which powers the sun.

It takes high temperatures to make atoms move fast enough to fuse. Currently the sun does not burn hot enough for the helium atoms to fuse together, and make carbon. In the core of the sun is a large mass of helium ash, which cannot be burned.

Eventually (about 5 billion years from now), the helium core is going to get so massive, that it will cause the sun to expand out, beyond the orbit of Mercury. When the sun does, its temperatures are going to increase a few million degrees. When it reaches this temperature, the helium in the core is going to start burning. This burning is going to cause more fusion reactions, which will combine two helium atoms to form one atom of carbon. The sun is not big enough to ever burn the carbon.

The process of helium burning is going to take about two million years. When the core of carbon gets too big, the fusion reactions will stop. Slowly the sun will shrink and cool. Eventually, the fire will go out and the only that will be left is a two earth (give or take) sized ball of solid carbon.

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Wiki User

14y ago

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