* Higher Core Temperature and Pressure: More massive stars have stronger gravity, compressing their cores to higher temperatures and pressures. This fuels more intense nuclear fusion reactions.
* Faster Fusion Rate: The higher temperature and pressure cause hydrogen to fuse into helium at a much faster rate.
* Burning Through Fuel Quickly: The increased fusion rate means the star consumes its hydrogen fuel much faster.
* Shorter Lifespan: The shorter the time it takes to burn through its fuel, the shorter the star's lifespan.
Roughly, a star twice the mass of the Sun will have a lifespan about 10 times shorter than the Sun.
Important Note: This is a general rule of thumb. The exact lifespan of a star depends on many factors, including its chemical composition, rotation rate, and magnetic field.
