Its been an incredible year for the planets, with amazing discoveries and startling new insights into our Solar System. Earlier this month, astronomers from around the World converged on Cambridge to discuss the latest planetary research. Chris Lintott reports.

Our Sun is an ordinary star, but the celestial zoo contains stars as small as the Earth and others which are tens of thousands of times brighter. Patrick Moore takes a census and celebrates the tenth anniversary of the solar satellite Soho, which has produced spectacular images of flares, comets and sunspots the size of planets.