Planets

1. The primary gas in the Jovian Planets is Hydrogen.

2. The primary gas in Mars and Venus is Carbon Dioxide

If I could visit one planet it would be Saturn because I would like to see its rings. I know that they are made of water ice and dust material so I would like to know what they feel like and see how thin they really are. I would also like to see the second biggest moon Titan and see what Saturn looks like sense it is mostly gas.