You can look at your text book and look for the answer its on book
ok kid don't do that
ok
It's the energy source for all stars (until their fuel is used up - white dwarf stage).
mass
On the main sequence.
A supernova occurs at the end of a massive star's life cycle.
Protostar!
cause its life cycle appearence
What is capella star life cycle
The "star life cycle" refers to stars. Earth is not a star.
Life Cycle of a Star
No, a protostar is basically the BEGINNING of a star's life cycle.
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 two factors are temperature and luminosity based on the HR diagram. The stage of the star in its life cycle also plays a key part.
http://images.google.com.au/images?q=lifecycle+of+a+star&um=1&hl=en&rlz=1T4HPAB_enAU255AU259&sa=2
what is the third stage of the star cycle
Nebulae are associated with the end of a star's life cycle, as they are shells matter that blown off a star, usually in a series of events, when a star is in its death throws.
How does the life cycle of humans compare to the life cycle of a star? They both have stages where they are born and die which is in the main sequence and supernova and in a human they are born in a womb and die of old age.
Nobody "invented" it, the life cycle of stars happens naturally.