SATURN

Saturn, often referred to as a gas giant, has no solid surface. Its outer layers consist of thick atmospheres of hydrogen and helium, gradually transitioning to a layer of metallic hydrogen deeper within. Deeper still, there may be a small rocky core, but it's surrounded by a thick, opaque layer of gases. Unlike terrestrial planets, Saturn lacks a solid or rocky surface that one could walk on, making it a unique and predominantly gaseous world in our solar system.