Too Smart

I was reading jokes with Ellie just now & asked her "What is a liquid that never freezes?" The answer was "warm water" but I thought Ellie's answer was pretty amazing.
She said, "THE SUN! Because the sun is liquid and it never freezes!" I know that the sun is "a mass of incandescent gas"* but when you look at plasma it looks a lot like a liquid and I just have to ask, What 6 year old thinks like that?

*They Might Be Giants