 Exploring the Planets - http://www.nasm.si.edu/ceps/etp/ Sponsored by the National Air and Space Museum, contains many interesting facts about the planets, pictures, comparisons and a section dedicated to spacecraft. |
 Gazetteer of Planetary Nomenclature - http://planetarynames.wr.usgs.gov/ Protocols for naming planetary features, by the Working Group for Planetary System Nomenclature of the International Astronomical Union. |
 Free Software for Planetary Science - http://members.tripod.com/petermasek/marinerall.html Image processing browers for Mariner 6, 7, 9, 10, Venera 15/16, and Viking Orbiter. |
 Endless Boundaries - http://www.fortunecity.com/roswell/milkyway/1000 Information on the Sun, planets and moons. |
 Northeast Regional Planetary Data Center - http://www.geo.brown.edu/BrownNASADataCenter/Home.htm Includes list of available image collections and how to obtain the data at the facility (no images are online). |
 Orrery: The Solar System in Action - http://www.harmsy.freeuk.com/orrery.html A concise tour containing numerous educational resources, and support for Spacetech's Orrery application. |
 Views of the Solar System - http://www.solarviews.com/eng/homepage.htm Multimedia tour with statistical data, detailed information, pictures and videos. Also includes educational resources. |
 SkyScopes - http://www.skyscopes.com/ Information about planetary astronomy and space exploration and habitat. Online chat, message boards, and related links. Sells replicas and toys. |
 Planetary Science Institute - http://www.psi.edu/ Research and educational institute with projects to study planets, asteroids, and comets. |
 The Planetary Society: Our Solar System - http://www.planetary.org/explore/topics/groups/our_solar_system/ Concise information about all planets, comets and asteroids. |
 Solar System Dynamics - http://ssdbook.maths.qmw.ac.uk/ Web-based resources accompanying the book Solar System Dynamics, by Carl D. Murray and Stanley F. Dermott. |
 Astronomy Today - Solar System - http://www.astronomytoday.com/astronomy/solarsystem.html Fairly detailed information about our sun and its planets. |
 Planetary Cartography and Graphics by Ralph Aeschliman - http://ralphaeschliman.com Planetary maps and graphics of Mars, the Moon and Venus. |
 Stardate Online: Guide to the Solar System - http://stardate.org/resources/ssguide/ Contains an outline of the formation and evolution of planets, comets, asteroids, and of their features and exploration. |
 The Solar System - http://www.evula.org/solarsystem History of and basic facts about major solar system bodies. |
 The Nine Planets - http://www.nineplanets.org/ Overview, sections dedicated to each planet and the smaller bodies - with data, information and some pictures - glossary and appendices. |
 Windows to the Universe - http://www.windows.ucar.edu/ Aimed at portraying Earth and Space Sciences in a fun way. Includes information about space weather, global space physics and a real time movie of current solar activity. |
 Astronomy 161: The Solar System - http://csep10.phys.utk.edu/astr161/lect/ Overview with historical background and basic astronomy concepts, details about planets, satellites, asteroids, comets and meteors. |
 Solar System Exploration Home Page - http://solarsystem.nasa.gov/index.cfm The Solar System Exploration Home Page is part of NASA's Office of Space Science and describes NASA's program to explore the solar system. |
 Rotation of Sun and Planets - http://www.geocities.com/saeles/planetsrotation.htm The rotation period of a large body circled by one or more satellites can be calculated theoretically. |
 Solar System Simulator - http://www.geocities.com/eagle_speaks/SolarSim/Appframe.html Shows the position of Venus, Earth and Mars at any date from 1900-2100. |
 Welcome to the Planets - http://pds.jpl.nasa.gov/planets/ Select images from NASA's planetary exploration program. |
 Astromaterials Curation - http://curator.jsc.nasa.gov/ Features Moon rocks, Mars meteorites, and space exposed materials at NASA's curation office. |
 Solar System Dynamics - http://ssd.jpl.nasa.gov/ Provides detailed information related to known bodies in orbit around the Sun. Ephemerides, physical parameters, Earth close-approaches, observer tools. |
 Solar System Simulator - http://space.jpl.nasa.gov/ Online software that generates views of the bodies of our planetary system at any date from any artificial or natural point of observation. |
 Planetary Fact Sheet - http://nssdc.gsfc.nasa.gov/planetary/factsheet/index.html Table of essential measurements and facts regarding the nine planets with links to highly detailed summaries. |
 A Planet Pursuit - http://homepage.eircom.net/~aidanbarry/planetpursuit/ Pictures, facts and general information on the nine planets. |
 Smiley's Planet - http://www.d.smiley1.btinternet.co.uk/ Explore the solar system's planets. Includes pictures, descriptions, statistical information and a special section on the latest voyage to Mars. |
 The Solar System in Pictures - http://www.the-solar-system.net/ Quizzes and images about all the bodies of our planetary system. |
 Computing Planetary Positions - http://stjarnhimlen.se/comp/ppcomp.html A detailed online tutorial on how to compute planetary locations using math formulas. |
 The Solar Space Station - http://www.solarspace.co.uk/ Facts, descriptions and pictures, with sections about the Sun, the planets and meteors and asteroids. |
 Nova Celestia - http://www.novacelestia.com/space_art_solar_system.html Provides overview and original illustrations of elements. |
 Orrery: Solar System Simulator - http://www.cuug.ab.ca/~kmcclary/ A Java applet that simulates gravitating masses. Features a working model with motions and sizes of 70 planets and moons to scale. |
 USGS Astrogeology Research Program - http://astrogeology.usgs.gov/ Features planetary imagery, research, GIS, mapping, and image processing software. The site provides information about the group and about the Solar System. |