Similar to its big friend Uranus, a thick soup of water, ammonia and methane makes up this planet's composition. Some other facts that fall into the composition of Neptune is that Neptune has a solid center. It's atmosphere is made of hydrogen, helium and methane. This methane gives methane the blue color that is has, similar to Uranus.…

Ura, ura, ura, Uranus! Uranus is the seventh planet away from the Sun, and the least massive of the four Jovian planets. It was discovered on March 13, in 1781 by a man named William Hershel. There are actually rings surrounding Uranus, but they aren't visible.

Our planetary neighbor is one of the terrestrial or rocky planets, which are planets made of denser material like iron. Venus is known as Earth's twin due to its similar size and density. They are fraternal twins, though, so don't think we could live there.

Mars is covered in rock, dirt and dust made from iron oxide, which is why it appears red. It also has thick ice sheets, which gives signs that at one point along its 4.5 billion years in the solar system there was water on this planet.