Neptune is the furthest gas giant from the sun. It is in fact planet number eight. Because of Pluto's elliptical orbit, it is sometimes the furthest planet from the sun. Although blue like Uranus, Neptune shows many more features in the atmosphere. One being the Great Dark Spot, similar to Jupiter's Great Red Spot. Neptune doesn't have as many moons as the other giants though. It only has eight, one of which is very close in size to our moon, that moon is Triton. Triton is different from our moon though, it orbits in the opposite direction that Neptune is rotating.