Jim Green (Planetary Science Division Director/NASA)

Europa and Enceladus are thought to have an ocean of liquid water beneath their surface in contact with mineral-rich rock, and may have the three ingredients needed for life as we know it: liquid water, essential chemical elements for biological processes, and sources of energy that could be used by living things. The hidden ocean of Saturn's moon Enceladus could be home to present-day hydrothermal activity. New results from the Cassini mission, are the first clear indications that an icy moon may have active hydrothermal activity -- in which seawater infiltrates and reacts with a rocky crust, emerging as a heated, mineral-laden solution. The findings add to the tantalizing possibility that Enceladus, could contain environments suitable for living organisms. NASA scientists have also confirms Liquid Lake on Saturn Moon Titan. They have concluded that at least one of the large lakes observed on Titan contains liquid hydrocarbons, and have positively identified the presence of ethane. This makes Titan the only body in our solar system beyond Earth known to have liquid on its surface. Ocean Worlds on Europa, Enceladus and Titan, are taking us leaps closer to finding water and possibly life on other Solar System bodies than our Earth.