Are the inner planets mostly made of gas
- Inner planets are mostly made of gases like hydrogen helium and methane
- Inner planets are mostly made of gases
- Why are the inner planets rocky and the outer planets mostly made of gas
- Why are the inner planets rocky while the outer planets are mostly made of gas and ice
- Why are the inner planets made mostly of rock and the outer planets made mostly of gas
- The inner planets are known as the gas giants they are made mostly of gas and dust