Talk:Planet 4546B/@comment-108.63.182.21-20170105144835/@comment-68.42.118.52-20170502072858

@Fandom User: "Gas giants don't have rocky cores."

Actually, they do have rocky cores, they're just really small and surrounded by an ocean of Metallic Hydrogen/Helium and that ocean is surrounded by layers of hydrogen and helium gas. These super-dense cores contain mostly iron, ice, and/or rock.

It's no different in context to Earth's Inner Core, which is mostly solid iron, surrounded by the Outer Core, which is an ocean of molten iron and nickel. The Outer Core is, in turn, surrounded by the Mantle, which is an ocean of molten rock.

If you were to blast away the entire atmosphere of a gas giant, you'd get a Chthonian Planet, which is the rocky core of the gas giant now exposed to space. Chthonian Planets still retain their gravity as gas giants except without an atmosphere so if you were to land on one, you'd still be crushed in the same manner.