astro talks general use with stellar evolution

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Transcript astro talks general use with stellar evolution

An interstellar cloud collapses to form a star in 100,000 years
A young proto star grows by accreting gas from a disk lasting 1,000,000 years
A star like our sun produces energy by turning hydrogen into helium for
1,000,000,000 years or more.
A star swells up into a red giant as its fuel runs out, lasting for 10,000,000 years
A star throws off its outer layers of gas as it ends its life and a tiny white dwarf star
remains. This nebula lasts about 10,000 years.