To the human eye the night sky is a source of mystery and wonder. Our ancestors knew it well. There is a connection to the cosmos that is hard to describe which you will achieve by knowing the names of some of the bright stars. As the seasons progress, the feeling of greeting an old friend is generated, when one of the stars you know first appears in the evening sky. Scientifically we know that the Universe is evolving in many ways. Some of these changes are apparent to the naked eye, however, over the course of the human life span there is constancy in the patterns we see in the night sky.