Among the many commonly discussed subjects - on love, religion, history and so on - there are quite a few wherein conventional and traditional beliefs and views obscure the underlying reality. The general reader of this book will find the truths exposed in it both informative and interesting. Some readers, though, might find them disturbing especially if they wish to cling on to certain well-loved and pet beliefs inherited from tradition. As a contrast to pet beliefs the author has included in this book a chapter on science where pet beliefs have no place. In this chapter he has briefly outlined the steps taken by astronomers through the ages in determining the vastness of the Universe. This is the science of celestial metrology.