ESA’s L4 mission is under study to land on Saturn’s ocean moon Enceladus. It is the Agency’s fourth ‘Large-class’ mission and the first flagship mission of Voyage 2050. This ambitious mission aims to sample the plumes that burst out from beneath Enceladus’s icy crust, and perform in-situ measurements directly from the surface, seeking out the ingredients that could fuel life. The orbiter will also perform flybys around Saturn’s other moons, to better understand the conditions needed for habitable worlds.