Why might the gas giants be more appropriately called the liquid giants?

Answer 1

Gas giants, such as Jupiter and Saturn, might be more appropriately termed liquid giants because their deep atmospheres consist primarily of hydrogen and helium in a fluid state under extreme pressure and temperature. Below their gaseous outer layers, these planets exhibit high-pressure environments where hydrogen transitions to a metallic liquid phase. This characteristic suggests that, rather than being composed solely of gas, their interiors are dominated by liquid materials, blurring the lines between gaseous and liquid states in their composition.