But that wasn’t the only surprise at Saturn. As well as finding new rings and identifying an additional moon, the Voyager spacecraft investigated the moon of Titan with its thick petrochemical atmosphere and methane rain. It also sent back close-up images of the moon Enceladus. This tiny, ice-encased world, around the size of the UK, is the most reflective body in the Solar System. Both moons have subsequently been investigated by the Cassini-Huygens mission, with Enceladus now ranked as a prime candidate for life.