Neptune is an "Ice Giant" planet. Neptune's atmosphere is composed primarily of hydrogen and helium. We can not see the surface but we believe the surface is primarily composed of ices and rock and the planet has a hot core.
Neptune is mostly made of gas. Also, Neptune has rings and clouds. BY: jill the queen of awesome
I believe it is mostly gas.
Neptune is mostly gas.
Nptune is made mostly out of gas
Neptune is made up of mostly gas.
it is made up of mostly gas
rocks
Air,gas,and rocks
rocks
rocks
Gas
The planets known as the gas giants are Jupiter, Uranus, Neptune, and Saturn. They get their name from being made of mostly gases, instead of rocks, like Earth.