This classic work is a definitive reference to the stars, the planets and the Universe. It contains hundreds of photographs from the very best ground-based telescopes and the Hubble and Spitzer space telescopes, along with fascinating images from five decades of robotic exploration of the planets. As well as being a beautiful and informative portrait of the cosmos, the book provides superb star maps and sound advice on practical observing, making it a highly suitable guide for those who wish to discover the richness of astronomy for themselves.