Question

what happens to a sun-like star after it has used up all the fuel in its core

Answer 1

When fuel gets exhausted gravity comes down, the outer layers are puffed out and forms planetary nebula. Inner layers for m a white dwarf which is very dense.

Answer 2

Explanation: When fuel gets exhausted gravity comes down, the outer layers are puffed out and forms planetary nebula. Inner layers for m a white dwarf which is very dense.