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Jupiter moon Ganymede could have ocean with more water than Earth
In this artist’s concept, the moon Ganymede orbits the giant planet Jupiter.
New data suggests Jupiter’s moon Ganymede, the largest in the solar system, has an underground ocean which contains more water than all of Earth’s surface water combined, according to NASA.
NASA scientists were able to use the Hubble Space Telescope to collect more than seven hours of data about the auroral belts...