Question

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

Answer 1

A massive star will always be reddish orange and have a short life span compared to our sun. This is because even though the temperature is lower, the star itself has more fusion going on to keep the sun from dying. And this drains the star's limited fuel supply. So they often go out after 50 to 60 thousand years. And that's short for a star!
Hope this helps!

Answer 2

If it have a higher temperature and position in the spectrum chart (White, White-Blue, Blue) then it would be longer.

If it is like a Red Giant, then it would be shorter.

Hope this helps!

~GeeksandNerds