Jupiter

Jupiter

For understandable reasons, the gas giant Jupiter itself was uninhabitable, but some of its moons did serve as temporary military bases and battlefields.

Io

Io, the innermost of Jupiter's Galilean moons, served as temporary base for Admiral Winfield's Exofleet remnant in the first years of the war. The moon has seen several fierce battles but in the end, Neosapien General Typhonus forced Exofleet to retreat further away from the Homeworlds. However, by then, Winfield has already allied himself with Jonas Simbacca, who provided him with a new base - Chaos.

Sinope

Sinope, with the Fusion Pulse Cannon built across it.

Sinope was one of the farthest moons of Jupiter. "Sinope Base" was the location of Phaeton's top-secret super-weapon, Fusion Pulse Cannon, designed to wipe out both the Pirate Fleet and Exofleet's base on Io. However, the Cannon only managed to fire roughly a dozen bursts at the Pirate Fleet before a combined Exotrooper-Pirate task force damaged the core of the weapon's "energy silo," causing an explosion which completely destroyed the cannon and obliterated Sinope. Its debris caused a meteor shower that heavily damaged the Neosapien fleet under the command of General Typhonus, who was on his way to directly attack the Pirates and Io Base. The Neosapiens were forced to retreat, which gave the Terrans enough time to evacuate.