ON JUNE 1 1th Cassini,an American spacecraft,flew past Phoebe,one of the moons of Saturn.Though the craft will take a further 20 days to reach Saturn itself,that flyby marked its entry into the solar-system-in-miniature1 which consists of the eponymous planet,31 named moons and the myriad un-named moonlets that make up Saturn's famous rings.……
