'To write a book about spherical astronomy without confusing the non-specialist is far from easy; to do so without using any but the most elementary mathematics is indeed a daunting task. James Kaler has tackled the problem head-on, and has achieved a notable success … All in all this is a fine book which fills a notable gap in the literature. It may be recommended without the slightest reservation.' Patrick Moore, The Observatory
'… if you are looking for a good grounding in basic astronomy then look no further - The Ever-Changing Sky is the book for you! I only wish I had had it when I was trying to get a clear understanding of the celestial sphere fifty years ago.' Gordon E. Yaylor, Astronomy Now
'For all seriously interested in astronomy a good grounding in this subject is essential but in the past, due to its mathematical nature, this subject has been closed to many. Now, however, Kaler's book presents the entire subject in easy non-mathematical terms and he is to be congratulated for this achievement.' Irish Astronomical Journal
'… a complete non-mathematical treatment of all aspects of the sky … it contains many very interesting facts and figures which are certainly not to be found in the average present day book on popular astronomy.' Henry Hatfield, Journal of the British Astronomical Association
'Those non-mathematical readers who really want to understand the intricacies of phenomena such as the rising and setting stars, tides and timekeeping, calendars and constellations, planetary paths and eclipses need look no further than the superbly illustrated The Ever-Changing Sky.' New Scientist
The Ever-Changing Sky provides a comprehensive and uniquely non-mathematical guide to spherical astronomy. In a clear and lucid text, the reader is guided through co-ordinate systems, time measurement and celestial navigation, on to the stars and constellations, the motions and appearance of the Moon and planets, tides and eclipses, and the smaller bodies of the Solar System.