Collins Dictionary of Astronomy

Over 3,500 entries covering the theory, practice and applications of astronomy.Explains the theories and principles of astronomy from the origin of the universe to the death of the starsDescribes the major astronomical objects from the planets to the constellations and nebulaeCovers all the major telescopes, together with their instrumentation, and observational techniquesUp-to-date internet links to help you explore the subject furtherCompiled by a team of professional astronomers