So, did anyone tried a radar on that giant, to make sure there is no solid surface?
As I understand it, they would have a solid core but the transition between solid, liquid and gas layers would be quite gradual, or blurry. Like (from inside out): solid->graduated density supercritical slush->supercritical fluid->liquid?->gas.
Only if they have something stable to sit on, which a supercritical fluid does not provide.If there was liquid at any point, there would be a clearly defined surface. Liquids tend to create oceans...