Jupiter's Moon Ganymede May Have Vast Saltwater Ocean Under Its Crust

March 13, 2015 1:56 PM

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Ganymede is the largest moon in the solar system and new observations suggest the massive satellite may host a vast saltwater ocean.

The Hubble Space Telescope found evidence of oceans on the Jovian satellite that could hold more water than is present on Earth. Since the 1970's, some astronomers have suspected water oceans exist on the distant moon.

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