When we hear the term "gas giant planet", our minds race directly to several planets located within our Solar System, Jupiter, Saturn, Uranus, and Neptune. These planets share several defining characteristics that allow them to be lumped into the same category.In particular, the high percentage of helium and hydrogen within their overall composition places them apart from other more terrestrial solar bodies. However, the term gas giant planet is a bit misleading in that it tells us very little about the actual composition of these unique worlds.Gas giant planets are composed of a high percentage of solid material. Due to the extreme pressure within the core of a gas giant, hydrogen may be converted into a metallic solid or liquid form.Frequently, there are other materials interspersed within this solid matrix as well. Although all gas giants contain high amounts of hydrogen and helium within their overall composition, they may also have…