The ocean of Saturn's moon Enceladus may have currents

The subsurface ocean of Saturn's moon Enceladus could have salt-water-driven currents similar to those on Earth, according to a theory proposed by scientists from the California Institute of Technology and NASA's Jet Propulsion Laboratory. RUNDOWN SHOWS:1. Depiction of the surface of Enceladus 2. Size comparison of Enceladus to Earth's Moon and Saturn's other large moons3. Depiction of Cassini spacecraft studying Saturn4. Cross-section of Enceladus showing its icy shell, subsurface ocean and rocky core5. Enceladus' ocean is heated by the moon's core6. Cross-section of Enceladus showing how water may circulate between its poles and equator