Ganymede
Largest of Jupiter's moons, one of the largest system bodies without a substantial atmosphere, and whose domes are known as the "breadbasket of the Belt". Large mirror arrays add to the sunlight for the domes.
Ganymede
| Orbit | 1,070,000 km |
| Diameter | 5,260 km |
| Gravity | 0.146g (light) |
| Day Length | synchronous |
| Year Length | 7.15 days |
| Atmospheric Pressure | 0.7 μPa |
| Atmospheric Composition | Mostly oxygen |
| Temperature | -163°C |
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