Completely revised and updated, this dictionary contains over 4,300 entries covering all aspects of astronomy. Written by an expert team of contributors under the editorship of Ian Ridpath, it is an accessible and invaluable reference for students, professionals, and space enthusiasts.

Completely revised and updated, this dictionary contains over 4,300 entries covering all aspects of astronomy. Written by an expert team of contributors under the editorship of Ian Ridpath, it is an accessible and invaluable reference for students, professionals, and space enthusiasts.