Hubble Reveals Underground Ocean on Jupiter’s Moon Ganymede

By watching the rocking motion of the two aurorae, astronomers have determined that a large amount of saltwater exists beneath Jupiter’s moon Ganymede. NASA’s Hubble Space Telescope has the best evidence yet for an underground saltwater ocean on Ganymede, Jupiter’s largest moon. The subterranean ocean is thought to have more water than all the water […]
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