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Death Of A Star


Death Of A Star

How do stars die?

When the fusion of hydrogen into helium takes place in the core of the star, it continues to shine for about 10 billion years. At some point of time, however, all the hydrogen gets consumed. Helium then melts to form carbon. What happens after this depends on the mass of the star. Lighter stars like the sun expand to become a red giant, till the fusion stops, and then implode to become a white mass about the size of the earth. Very large stars, about 20 times heavier than our sun, expand to become a giant and finally explode. This is known as 'supernova'. The remains of a supernova become either a neutron star or a black hole.

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