Question

why do you think massive star has shorter life span than average star​

Answer 1

Answer:

this is because it over uses it's hydrogen fuel so fastly

Explanation:

because of high amount of mass it's nuclear reactions accelerate leading to much more use of hyrogen fuel then a normal star, which exhaustes it's fuel reserve faster then average ones.

Answer 2

A massive star has a shorter life span than an average star because of faster hydrogen fuel consumption by a massive star.

• Massive stars have shorter lives than common small stars because, despite having more hydrogen for nuclear reactions, they consume their fuel at a much faster pace because of their very large size.
• The greatest stars have ten or a hundred times the mass of the Sun, but they are a million times brighter so, they burn their fuel a thousand times faster and survive for just a million years or less.
• On the other hand, the smallest stars, which have a mass of less than that of the Sun, have the potential to exist for hundreds of billions of years.