Jupiter, followed by Saturn, Uranus and Neptune.
Jupiter
Mercury is a rocky planet.
Gas giantA "gas giant" planet.
rock not gas
Jupiter, Saturn, Uranus and Neptune are each mostly a big ball of gas.
Rocks
Neptune is mostly made of gas. Also, Neptune has rings and clouds. BY: jill the queen of awesome
Because it is made mostly out of gas and the clouds around it are gas too :)
It is mostly rock.
no,infact Neptune is a gas planet with no solid surface
Jupiter, Saturn, Uranus and Neptune are all gas giants.
Gas, mostly Hydrogen and Helium.