Where is the best place to find living life beyond Earth? It may be a small, ice-covered moon of Jupiter or Saturn that harbors some of the most habitable real estate in our Solar System. Life loves liquid water and these moons have lots of it! Dr.Kevin Hand, Deputy Chief Scientist for Solar System Exploration at NASA's Jet Propulsion Laboratory explains the science behind how these oceans exist and what we know about the conditions on these worlds. Dr. Hand focuses on Jupiter's moon Europa, which is a top priority for future NASA missions and shows how the exploration of Earth's ocean is helping our understanding of the potential habitability of worlds.