Ocean Worlds (IMAGE) Woods Hole Oceanographic Institution Caption Ocean worlds beyond Earth have been a key research focus for NASA's Planetary Science Division ever since the confirmation of ice-covered liquid water oceans on Jupiter's moons Europa and Ganymede and, subsequently, Saturn's moons Enceladus and Titan. The new Network for Ocean Worlds (NOW), is the latest of four research coordination networks (RCNs) to be established by NASA that will enable research covering different aspects of the search for life beyond Earth. Credit NASA Usage Restrictions with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.