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Because a massive star has more pressure on the core, this creates greater temperatures, which increase the amount of nuclear fusion that occurs. This uses more hydrogen and thus the star runs out of fuel much quicker, that a smaller star.

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Q: Why does a massive star have a much shorter life span compared to the sun?
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What is the gravity percentage on the moon?

Compared to what ? -- Compared to the surface of Mars, it's 43.7% as much. -- Compared to the surface of Pluto, it's 2.8 times as much. -- Compared to the surface of the Earth, it's 16.5% as much.


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