Stars that have masses approximately 0.8 times the mass of the sun take about 18 billion years to turn into red giants. how does this compare to the current age of the universe? would you expect to find a globular cluster with a main-sequence turnoff for stars of 0.8 solar mass or less? why or why not?
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Stars that have masses approximately 0.8 times the mass of the sun take about 18 billion years to tu...
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