Observations suggest underground ocean on Jupiter's largest moon
NASA’s Hubble Space Telescope has the best evidence yet for an underground saltwater ocean on Ganymede, Jupiter’s largest moon. The findings are presented in a recently published paper with Lorenz Roth from KTH EE as one of the authors.
“The main result is that with a new approach of imaging the aurora we could provide evidence that inside the moon Ganymede a liquid water ocean exists. The existence of the ocean has been speculated before, but there has not been conclusive evidence until now,” Lorenz Roth, PostDoc at KTH EE.
Scientists estimate that the ocean is 100 kilometers thick – 10 times deeper than Earth's oceans – and is buried under a 150-kilometer crust of mostly ice.
The findings have created a lot interest – not only among scientists, but also in media such as New York Times in USA and DN in Sweden.