Gas giant

	Gas giant
	Special features Colony structures Superscalar gas harvester Biome changes Gas giant compression: barren

Gas giants are non-colonizable planets, which never have moons. They are always in their own size class, giant. Superscalar gas harvester can be built on them if their system is colonized. With planetology (TL 5), a space factory can compress them into a colonizable large or huge barren planet.