Onee the Sun has gone down, on clear nights without moonlight, the sky is inhabited by thousands oflumi nous dots of various eolours and levels ofbrightness. The speetacle offered by a starry sky is both grand and sublime, especially in less urban areas. In plaees where night illumination and air pollution are that mueh more intense, it is well known that we are unable to see as many stars as in a rural region. Nevertheless, this need not be overstated: on the out skirts of cities, or even in the cities themselves, pro vided you ehoose the more favourable areas, it is still possible to see...