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 stars
• Describes the major astronomical objects from the planets to the constellations and nebulae
• Covers all the major telescopes, together with their instrumentation, and observational techniques
• Up-to-date internet links to help you explore the subject further
• Compiled by a team of professional astronomers