Question

what is the last stage of sun​

Answer 1

A red giant is the last stage of sun

Answer 2

Answer:

All stars die, and eventually — in about 5 billion years — our sun will, too. Once its supply of hydrogen is exhausted, the final, dramatic stages of its life will unfold, as our host star expands to become a red giant and then tears its body to pieces to condense into a white dwarf.