What is the Universe? How do we fit in? How the Universe works In the beginning Fate of the Universe Exploring the Universe Our corner of the Universe Our local star Earth's moon Comparing the planets Mercury and Venus Home planet Mars, the Red Planet Jupiter, king of the planets Saturn, the ringed wonder New worlds Asteroids, meteors, and meteroites Icy wanderers Distant suns The variety of stars Clusters and nebulae Star birth Star death Pulsars and black holes The Milky Way Neighbors Galaxies galore Quasars and other active galaxies A universe of life Index