Question

What would happen if the sun broke away from the solar system and went out on its own?

Answer 1

Planets' orbits around the sun will slowly expand. It won't happen fast enough to save the Earth, but if Neptune edges far enough out it could become a home for humans, with some terraforming. ... For about 2 billion years the sun will fuse helium into carbon and some oxygen, but there's less energy in those reactions

Answer 2

All the planets in our solar system would lose orbit and freeze. All the planets would be in total darkness.

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