Europa's ocean hidden under 20 kilometers of ice - Space and Astronomy. Crucial data to understand if life forms are possible on Jupiter's moon.
Europa's ice hides a rocky core and is quite young from a geological point of view. It is in fact between 50 and 100 million years old and its structure is remodeled both by plate tectonics and by the convective currents of the ocean. Previous estimates showed a very thin layer of ice over a thick ocean. But our research - said Shigeru Wakita - has shown that there must be a thick layer.