The 27th edition of Sidgwick & Jackson"s astronomy yearbook, this volume contains articles on a variety of subjects by well-known authors. There are also 26 pages of star charts for each hemisphere, designed for easy reference for observers in both northern and southern latitudes which are backed up with monthly comments on the activity of the night sky. Details are also given on the planets, moon phazes, eclipses, nebulae, comets and meteors and information on variable stars includes co-ordinates updated for epoch 2000. The articles include "The Lunar Surface" by Gilbert Fielder, "The Volcanoes of Venus" by Peter Cattermole, "A Bang in the Night" by David Allen, "Astronomy with Gamma-Rays" by Arnold Wolfendale, "Cameras for Infrared Astronomy" by Ian S.McLean, "IRAS Galaxies: What are They?" by Kieron Leech and "The Threat from Space to Darkness at Night" by Paul Murdin.