Ganymede appears to acquire many ocean levels, stacked up with layers of ice in between them. The very best level of ice would be the crust, which might be about one hundred fifty kilometers (about 90 miles) thick. The bottom ocean degree might be 800 kilometers (about 500 miles) beneath https://erickosssq.full-design.com/the-single-best-strategy-to-use-for-moons-77134191