NASA says it has confirmed that an ocean lies beneath the icy crust that forms the surface of Jupiter’s largest moon Ganymede. The presence of a deep ocean there means Ganymede may be capable of sustaining life.
Ganymede – the largest moon in the solar system – has a salty ocean underneath the icy shell that surrounds it, NASA said on Thursday.
The ocean is believed to be far deeper than any on Earth – some 100 kilometers (60 miles) deep and buried under some 150 kilometers of ice.
A European Space Agency mission to be launched in 2022 is expected to circle Jupiter and take a closer look at the moons, including Ganymede.

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Source News: DW