Gas Giants are massive planets with a gaseous composition. They have extreme conditions.
Features
Gas giant's extreme conditions (often around ±300 °F) make them almost impossible to inhabit. Gas giants also lack land and resources. This makes establishing a base within one, while not strictly impossible, often not worth the effort. This very fact, however, means they make ideal (albeit most likely temporary) hiding places for high security structures as raiders will very rarely, if ever, check the interior of gas giants. Despite having no land gas giants are not completely featureless. Their interior is filled with gas clouds which obscure view. These clouds can not be harvested for gas. They often have rings. As rings are proportional to a planet's size, the rings of gas giants are often huge. Large planetary and ring sizes make gas giants suitable spots for ring bases and orbiting space stations.