Saturn is not solid like Earth, but is instead a giant gas planet. It is made up of 94% hydrogen, 6% helium and small amounts of methane and ammonia. Hydrogen and helium are what most stars are made of. It is thought that there might be a molten, rocky core about the size of Earth deep within Saturn.

Saturn jest planetą gazową tak jak Jowisz, Uran i Neptun. Nasza planeta zalicza się do kategorii skalistych podobnie jak Merkury, Wenus i Mars.