Download or read book A Dictionary of Astronomy written by Ian Ridpath and published by Oxford University Press, USA. This book was released on 2012-01-19 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dictionary contains over 4,300 entries covering all aspects of astronomy from astrophysics and cosmology to galaxies and time. Major entries include Big Bang theory, relativity and variable stars. Biographical entries on eminent astronomers are also included.