IN THIS MONTH 15th December 1966 Janus, a moon of Saturn, is discovered by French astronomer Audouin Dollfus. Astronomers were first mistaken that another moon, Epimetheus, was the same as Janus. In 1980 Voyager 1 confirmed that these two moons share the same orbit. Janus is potato-shaped with a diameter of 180 kilometres and orbits 151,000 kilometres from Saturn in the gap between the F and G rings, taking 17 hours to complete one orbit. It is extensively cratered with sever

DID YOU KNOW This month . . . The Kuiper Belt. Home to short period comets and icy bodies in the far reaches of our solar system. The Kuiper Belt is one of the largest structures in our solar system. Its overall shape is like a doughnut extending from the orbit of Neptune to approximately 7.5 billion kilometres from the Sun. Pluto is the most well-known Kuiper Belt Object (KBO) and the first KBO to be discovered in 1930 at a time before astronomers had reason to expect