Ganymede, Jupiter's largest moon, has ocean lurking below: NASA

[news]

http://i.cbc.ca/1.2992555.1426185217!/cpImage/httpImage/image.jpg_gen/derivatives/16x9_460/jupiter-moon-ocean.jpg The largest moon in the solar system harbours a salty ocean beneath its icy shell, the latest member to join a growing club of watery moons, NASA said Thursday.


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