My friend and I had started to debate what would happen if all the star burnt out. Would this lead to a Big bang, in my theory, creating another universe. Brand spanking new. Him saying, the stars burning out leading to destruction of everything, leaving nothing left in the universe. I see that as impossible.
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If the stars burned out, we would be left in an empty universe forever. Nothing left but still particles and cold darkness. Although, some people theorise that the Universe's expansion will end eventually. Before long, the force of gravity will cause the Universe to collapse in on itself. This is known as the Big Crunch. Some people theorise that a new Universe will be born after the Big Crunch.