Alan Gilmore, Mt John Observatory, University of Canterbury
The realisation that stars are just distant suns, like our own, led to speculation about the existence of other planets, and other life forms. The first extra-solar planet orbiting a ‘normal’ star was detected in 1996. More than 300 planets have now been identified, and many have been discovered by New Zealand astronomers. But the chances of finding one which has the pre-requisites for life are slim, and even if we do find another in “The Goldilocks Zone”, the possibility of travelling to it is as yet out of the question. Earth is a very special place indeed. (Recorded in Tekapo)