That would be its size. Bigger stars live shorter lives because they use up energy faster, while smaller stars live longer because they don't use up as much energy.
The "star life cycle" refers to stars. Earth is not a star.
Nobody "invented" it, the life cycle of stars happens naturally.
how long the life cycle is.how many animals there are.
In the nebula!
The smaller a star is, the longer its life cycle.
the answer is a protostar
The more the mass the shorter their life cycle (the more quickly they use their fuel)
Stars are "born", mature, reach old age, then "die".
Astro means star its study of the life cycle of stars
The main sequence.
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The more massive a star is, the less its life time.