The Mystery of the Universe Its Stars and Planets . Scientific discoveries and tools have changed our knowledge of the universe over the years. With astronomers past and present, we have learned about the planet Earth, our Sun, and the planets that surround. This paper details the history of astrology, prominent astronomers, and the solar system. 6 pgs. Bibliography lists 6 sources. Pages: 6 Bibliography: 6 source(s) listed Filename: 4158 Stars and Planets.doc Price: 53.70