Philip's Astronomy Dictionary: An Illustrated A-Z Guide to the Universe by Storm Dunlop
This is a completely updated new edition of this comprehensive A - Z dictionary, covering all aspects of astronomy. Written in a style that is both interesting and accessible, it is an invaluable reference source for all fans of astronomy, whether active observers or armchair enthusiasts. It contains more than 1,000 entries, ranging from aberration and ablation to Zond and Zwicky, and is illustrated with 250 colour photographs, diagrams, and tables.