Scientists using the Hubble Space Telescope have confirmed that the Jupiter- orbiting moon Ganymede has an ocean beneath its icy surface, raising prospects for life, Nasa has said.
The finding resolves a mystery about the largest moon in the solar system after Nasa’s Galileo spacecraft first provided hints that Ganymede has a subsurface ocean.
Scientists estimate the ocean is 100km (60 miles) thick, 10 times deeper than Earth’s oceans, and buried under a 150km (95-mile) crust of mostly ice.
Jim Green of Nasa called the finding “an astounding demonstration”.
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– (Reuters)