Question

Can a star become a red giant more than once?
A) yes, before and after the helium flash
B) yes, before and after the Type II supernova event
C) no, the planetary nebula blows off all the outer shells completely
D) no, it will lose so much mass as to cross the Chandrasekhar Limit
E) no, or we would see them as the majority of naked-eye stars

Answer

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