Nebulae (gas and dust) protostar (formed by immense pressure in nebulae) ^ becomes either a Brown dwarf (basicall dead :P) or a Main sequence star which becomes: A Red giant (when MSS runs out f hydrogen ) if red giant is small it becomes a white dwarf and does nothing or a planetary nebulae if it's a big one it either becomes a Neutron star or a Black hole
The most important factor is the stars mass.
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The life cycle of all stars is pretty similar from birth to late in their life - that's when the rest of their life cycle can vary dramatically. Small and medium-sized stars tend to be the longest-lived stars (our Sun is a typical example), and they end their life by expanding, cooling, and then blowing off their outer shell while their nucleus collapses to a "White Dwarf".
Mass and size
Short, violent, and ends as a black hole.
The "star life cycle" refers to stars. Earth is not a star.
Nobody "invented" it, the life cycle of stars happens naturally.
In the nebula!
Stars go through stages like birth, main sequence, red giant, and death, which can last millions or billions of years. In comparison, humans have a much shorter life cycle, typically living for decades. Both stars and humans undergo changes over time and eventually cease to exist.
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)
The most important factor is the stars mass.
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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