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The Nine Planets A Multimedia Tour of the Solar System by Bill Arnett

Bill's site map

This website is an overview of the history, mythology, and current scientific knowledge of each planet and the major moons in our solar system. Each page has my text and NASA's images, some have sounds and movies, most provide references to additional related information.

All nine planets can be seen with a small telescope; all but Pluto can be seen with binoculars. And large observatories continue to provide much useful information. But the possibility of getting up close with interplanetary spacecraft has revolutionized planetary science. Very little of this site would have been possible without the space program.

Nevertheless, there's a lot that you can see with very modest equipment or even with just your own eyes. Past generations of people found beauty and a sense of wonder contemplating the night sky. Today's scientific knowledge further enhances and deepens that experience. And you can share in it by simply going out in the evening and looking up.

• Introduction and FAQ
• What's New
• Express Tour
• Solar System Overview
• The Sun
  • Mercury
  • Venus
  • Earth
    • The Moon
  • Mars
    • Phobos
    • Deimos
  • Jupiter
    • Metis, Adrastea, Amalthea and Thebe
    • Io
    • Europa
    • Ganymede
    • Callisto
    • Leda, Himalia, Lysithea, Elara, Ananke, Carme, Pasiphae and Sinope
    • Recently discovered moons
  • Saturn
    • Pan and Atlas
    • Prometheus and Pandora
    • Epimetheus
    • Janus
    • Mimas
    • Enceladus
    • Tethys, Telesto and Calypso
    • Dione and Helene
    • Rhea
    • Titan
    • Hyperion
    • Iapetus
    • Phoebe
    • Recently discovered satellites

    Hardcopy

    The New Solar System

    Summarizes what we've learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets.

    T. Rex and the Crater of Doom

    The story of the discovery of the impact crater that doomed the dinosaurs. Nice description of how science works in the real world.

    Encyclopedia of the Solar System

    A more scholarly introduction to planetary science for those who want to dig a little deeper.

    The Compact NASA Atlas of the Solar System

    This 'road map' of the solar system contains lots of maps and data as well as photos.

    Bad Astronomy

    The truth is out there; so is a lot of baloney. Here's the straight story on many popular urban legends, myths and misconceptions. Great fun, too!

    Build Your Own Telescope

    Want to see the planets for yourself? It's actually pretty easy to make a simple but powerful telescope. Here's how.
  • Uranus
    • Cordelia, Ophelia, Bianca, Cressida, Desdemona, Juliet, Portia, Rosalind, Belinda and Puck
    • Miranda
    • Ariel
    • Umbriel
    • Titania
    • Oberon
    • Caliban, Sycorax, Prospero, Setebos, Stephano, and Trinculo
  • Neptune
    • Naiad, Thalassa, Despina and Galatea
    • Larissa
    • Proteus
    • Triton
    • Nereid
  • Pluto and Charon
  • Small Bodies
    • Comets
    • Comet Halley
    • Comet Shoemaker-Levy 9
    • The Kuiper Belt and the Oort Cloud
    • Sedna
    • Asteroids
    • 951 Gaspra
    • 243 Ida
    • 253 Mathilde
    • 433 Eros
    • Meteors, Meteorites and Impacts
    • The Interplanetary Medium
• Other Solar Systems
• Seeing the Solar System with your own eyes (or binoculars or a small telescope)
• Spacecraft involved in planetary science
• How you can help support the continued exploration of space
• Glossary of technical terms and proper names
• Appendices
  • Solar System Data: Orbital, Physical, Misc
  • Extrema, the biggest, brightest, etc.
  • Discovery Chronology
  • The Origin of the Solar System
  • Planetary Linguistics, including the planets' names in various languages
  • Astronomical Names and how they're assigned
  • Hypothetical Planets (Planet X et al, or "Don't believe everything you read")
  • Planetary Picture List: images on the Net; posters, calendars and prints offline
  • Planetary Music: classical music relating to the planets
  • Credits for those who helped make this possible
  • Mirror sites: copies of The Nine Planets at many sites around the world.
  • Copyright Notice
• The Nine Planets Bookstore: books about the solar system
• How to contact the author (for comments, questions and bug reports)
• Search this site or the whole Web:

  	Web www.nineplanets.org

Our knowledge of our solar system is extensive. But it is far from complete. Some of the worlds have never even been photographed up close. The Nine Planets is an overview of what we know today. We are still exploring. Much more is still to come:

We shall not cease from exploration, and the end of all our exploring will be to arrive where we started and know the place for the first time.
-- T. S. Eliot