WASHINGTON: A ‘global’ ocean containing a vast liquid water reservoir lies beneath the icy crust of Saturn’s geologically active moon Enceladus, according to new research using data from Nasa’s Cassini mission. Researchers found that the magnitude of the moon’s very slight wobble, as it orbits Saturn, can only be accounted for if its outer ice shell is not frozen solid to its interior, meaning a global ocean must be present. […]