Saturn: The Disappearing Rings

Saturn is generally regarded as the most beautiful object in the sky, but this year it has an unusual appearance. For the first time since 1966 the rings are edgewise-on to the Earth, and even large telescopes will show them as no more than a slender line of light. Paul Doherty, an enthusiastic observer of Saturn, joins Patrick Moore to talk about the interesting features of Saturn which can be seen when the rings are almost invisible.