Jupiter Moon Europa's Ocean May Have Enough Energy to Support Life

Jupiter's moon Europa might be able to support life even if there's little or no volcanic activity under the satellite's icy shell, a new study suggests. Scientists think this ocean could be habitable, if it harbors the required chemical building blocks and the right proportion of elements to provide energy for biological systems — the right ratio of oxygen to hydrogen, for example. A research team led by Steve Vance, of NASA's Jet Propulsion Laboratory in Pasadena, California, found that,