Will our Sun become a black hole?
No. Stars like the Sun just aren't massive enough to become black holes. Instead, in several billion years, the Sun will cast off its outer layers, and its core will form a white dwarf - a dense ball of carbon and oxygen that no longer produces nuclear energy, but that shines because it is very hot. A typical white dwarf is about as massive as the Sun, but only as big as Earth, which is one percent of the Sun's present diameter.
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