Editing Solar System (section)

== [[Jupiter]] ==
A [[Wat|gas giant Forge World]], though the entire population is in orbit on one of the moons or in the various stations and docks that surround it. Jupiter is ''THE'' Imperial Navy's foremost shipyard and drydock. It only makes ships, though the planet is also ringed by a dense cloud of broken ships that are waiting to be scrapped and re-purposed into new materials. It is a hotly contested Imperial political debate as to whether Jupiter is sovereign to the Mechanicum or the Imperium (technically it would be politically between the Mechanicum and the Administration, as the Imperium is the unification of these two entities). They went totally green though, the hippies. Back in the Age of Strife, the planet was home to groups of Void Clans, while the moons were occupied by monstrous Xenos hordes until the Great Crusade wiped them out. The Horus Heresy did quite a number to the Jovian moons, with several of them devastated by Perturabo and the Iron Warriors. However, they were quickly reclaimed early in the Great Scouring.

* '''Io''': The large moon closest to Jupiter and the most volcanic hellhole in the system. Has some Mechanicus habitats.
* '''Europa''': Once an icy rock with a massive ocean beneath its surface, it was terraformed into an Ocean Moon. Also has habitats.
* '''[[Ganymede]]''': Was once a Forge Moon that was used for experimentation on recovered [[Squat]] technology (Warp batteries, specifically Warp-Plasma generators). However, the experiments went awry and created the Contagion of Ganymede, a hole into the Warp that unleashed a Daemonic invasion and devastated it. The moon was declared Perdita and quarantined. Yeah, maybe testing something related to the Warp on a Forge-anything was a terrible idea that shouldn't need hindsight to reveal. However, since [[Roboute Guilliman]] returned, the [[Grey Knights]] got off their asses and recovered the moon, allowing the Imperium to convert it into a Hub-Fortress for the supply of the [[Indomitus Crusade]].
* '''Callisto''': The furthest large moon with thin atmosphere and an underground ocean. Also has a bunch of habitats.
* '''Lysithea''': An asteroid moon that was invaded and conquered by Xenos during the Age of Strife. Reclaimed by the [[Raven Guard|Pale Nomads]] in their early campaigns.
* '''Ananke''': Asteroid with habitats.
* '''Iocaste''': Another asteroid with habitats.
* '''Thule''': An asteroid placed into orbit of Jupiter and turned into a Forge Moon in the final years of the Dark Age of Technology. The Dark Mechanicum hijacked the shipyards and used them to build the Abyss-class battleships used by the Word Bearers during the Horus Heresy. Shortly after their construction, [[Lorgar]] used them to destroy Thule and all proof of their existence.
* '''Kadal''': A massive lump of iron-nickel that was turned into the system's main munitions fortress. Was destroyed by Alpha Legion infiltrators.
* '''Saros Station''': A highly luxurious resort station built above the Great Red Spot, said to rival the Imperial Palace itself.
* '''The Caul''': A massive debris field that surrounds Jupiter, filled to the brim with wrecks of all sorts.