How long do red giants and supergiants last?

1 Answer
Shwetank Mauria
Jan 11, 2017

Red giants have their size of the order of our sun (from #0.3# times sun to #8# times) and their life may range about a billion years. Larger the size smaller the life. Supergiants have mass from around #10# times the sun and upwards and their life could range from #30# million years down to a few hundred thousand years

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