The world of astronomy is as interesting as it is rich in variety. 'Astronomy' takes you on an impressive journey through the infinite expanse of the universe. This comprehensive encyclopedia of astronomy is divided into two main sections. The first part is an 'Introduction to astronomy'. This consists of a detailed description of the history of astronomy from the ancient Egyptians to the present day. As well as explaining the relevance of astronomy to our daily life, this section uses words and pictures to describe the solar system, the inner and outer planets, the galaxies and the stars in fascinating detail.