Dr Rosaly Lopes, Senior Research Scientist at NASA-JPL, on being part of the Galileo mission to the moons of Jupiter and Saturn to discover the possibilities of life beyond Earth, thanks to the discovery of cryo-volcanoes on Jupiter’s Europa, as well as Saturn’s Titan and Enceladus, all of which contain liquid water underneath their icy crusts. Dr. Lopes was in Singapore as part of the U.S. Department of State’s U.S. Speaker Program.