An article published in the journal “Geophysical Research Letters” describes a research on Dione and Enceladus, two of the planet Saturn’s moons. Using data collected by the Cassini space probe, Mikael Beuthe, Attilio Rivoldini and Antony Trinh of the Royal Observatory of Belgium in Brussels calculated in a new way the two moons’ icy crust thickness concluding that Dione has an underground ocean as well.