EVER LOOK UP AT THE NIGHT SKY AND WISH YOU KNEW WHAT YOU WERE SEEING? Cosmology is the study of the Universe. In COSMOLOGY 101 astronomer David H. Levy takes readers on a fascinating tour of our solar system, our own Milky Way Galaxy, and the rest of the cosmos. This is an easily read and understood introductory (or refresher) course on all things astronomical by the discoverer of the Shoemaker-Levy comet. Discover: How the Universe was born. How the Universe expanded and took the shape it currently has. How galaxies came together. How stars provide the materials for planets and life. How our solar system was formed. What comets are, where they come from, and where they go. What a solar eclipse and a lunar eclipse are. How to view the night sky yourself. DAVID H. LEVY, science columnist for PARADE magazine and a contributor to Sky & Telescope, is one of the world's foremost astronomers. He has discovered 21 comets, including Shoemaker-Levy 9, which collided with Jupiter and made historic, worldwide news. Levy is the author of several books, including Impact Jupiter and Eclipse: Voyage to Darkness and Light. Levy observes the cosmos every clear night from his own observatory in Tucson, Arizona.