Is the lifetime of a massive star shorter or longer than a star like the sunwhy?

Answer 1

It is shorter because it uses the fuel faster and ends up dying faster.

Answer 2

The lifetime of a massive star is shorter than that of a star like the sun. Massive stars have more fuel to burn but burn it at a faster rate due to their higher core temperatures and luminosities. This leads to a shorter lifespan for massive stars compared to sun-like stars.