The Jupiter Icy Moons Explorer (JUICE) left Earth a year ago, embarking on a mission to explore Jupiter's potential ocean moons — Ganymede, Callisto and Europa — in detail.
Water is a vital ingredient for life on Earth, so learning more about its distribution on these moons and others, such as the Saturnian moon of Enceladus, can tell us about whether these ocean worlds can host life — life as we know it, at least.
