The Outer Planets

Credits and AcknowledgementsCredits and Acknowledgements

Author: Portia Wolf
Editor: Erin Wood
Web design: Ransom Christofferson

This is a NASA funded initiative undertaken by the Laboratory for Atmospheric and Space Physics.

We would like to thank the authors and publisher of The Cosmic Perspective for allowing us to use definitions from their glossary, and the following people for content and guidance:
Fran Bagenal, Nick Schneider, Mihály Horányi, Emily CoBabe-Ammann, Andrew Poppe, Neil Marks, Therese Possel, Nate Bolt, and Margaret Mitter.

Extrasolar planet art courtesy of

The Cosmic Perspective is available for purchase on

Primary Sources of Information:

Bennett, Jeffrey, Megan Donahue, Nick Schneider, and Mark Voit. The Cosmic Perspective. 4th ed. San Francisco: Pearson Education, Inc., 2007.

NASA. National Aeronautic and Space Administration. May 2007 May 2008. <>

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