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What happens to a star when its exhaust the supply of hydrogen in its core?

April 26, 2017core exhaust happens Hydrogen star supply

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What happens to a star when its exhaust the supply of hydrogen in its core?

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The star first expands into a red giant (or a supergiant star if the original star was a giant star) and then explodes in a fusion flash (sun-size star), nova (slightly larger), or supernova (for a supergiant).