Answer:
Once all the helium disappears, the forces of gravity will take over, and the sun will shrink into a white dwarf. All the outer material will dissipate, leaving behind a planetary nebula. "When a star dies, it ejects a mass of gas and dust — known as its envelope — into space.
If the sun disappears suddenly, total darkness will be observed on Earth after 8 minutes – the time it take for its light to reach us. If darkness was the only factor, it would take a while for most life to vanish from Earth.
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