What next stage of the suns life cycle will turn into a?

The next stage of the Sun's life cycle will be its transformation into a red giant. As the Sun exhausts its hydrogen fuel in the core, it will begin to fuse helium and expand significantly, engulfing the inner planets, including possibly Earth. Eventually, it will shed its outer layers, creating a planetary nebula, while the core will remain as a white dwarf, marking the final stage of its evolution.