What happens to Red Giants?

-When the Red Giant has no Fuel Left, it will become Unstable -Its Outer Layers will Eject, so Dust and Gas, which will create the Basis of a Planetary Nebula. -And, the Hot Dense Solid Core is the Leftovers of it All. This is a White Dwarf which will Cool [Over a Stupid Amount of Time] and Fade Away. How sad :(