Europa (IMAGE) University of Texas at Austin Caption Scientists think an ocean of water that could potentially support life likely exists under Europa's icy surface. Europa is nearly the same size as Earth's Moon, but may have twice as much water as the Credit NASA/JPL-Caltech/SETI Institute PIA19048 Usage Restrictions 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.