The Bigger They Come - The Brighter They Shine

After collapse onto the main-sequence a star begins its hydrogen burning phase. This is crudely analogous to you shedding the cocoon of college (formative) years and settling down to live a productive and busy life until you retire. Once on the main-sequence the star enters a period of relative stability and will spend approximately 90% of its lifetime in this phase. In today's lecture we consider the "normal" aspects of a star's life.
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