A European Space Agency satellite blasted off from Earth yesterday on an 8 year journey to the planet Jupiter. The mission, known as the Jupiter Icy Moons Explorer, or JUICE for short, aims to establish whether the Jupiter's moons have the conditions needed to sustain life. There is plausible scientific evidence that these icy worlds - Callisto, Europa and Ganymede - hold oceans of underground liquid water. We spoke to Prof. Mike Kosch, Chief Scientist at the South African National Space Agency - SANSA.