A guided tour -- The earth from space -- The moon -- Planets and moons -- Asteroids and comets -- The sun -- Other stars -- Supergiants and supernovae : the deaths of stars -- Neutron stars, pulsars, and black holes -- Galaxies -- Nebulae and clusters -- Quasars and other oddities -- Cosmology : beginnings and endings -- Explorations on your own : offline -- Explorations on your own : online -- Remote astronomy over the Internet -- Computers in amateur astronomy -- Appendix A. Software on the CD-ROM -- Appendix B. Images on the CD-ROM -- Appendix C. Animations on the CD-ROM -- Appendix D. Sources.