1. Build A Solar System JavaScript calculator of sizes and distances of solar system bodies for making a scale model. http://www.exploratorium.edu/ronh/solar_system/

Make a scale model of the Solar System and learn the REAL definition of "space." This Page requires a JavaScript capable browser. Fill in the diameter of the Sun you want your model to be scaled by. You can fill in either the red bordered inches box or the green bordered millimeters box. Important: Only fill in one box. If both are filled in you will get a dialog box asking you to clear one of the boxes. Use the Clear button to clear the entire form. Click on the "Calculate" button. Notice that the distances and sizes of the planets will automatically fill in. I've also provided some other interesting scale comparisons at the bottom of the chart. You can now build your scale model. You can do this with a long tape measure, or you can measure the size of your pace and walk it off counting the number of steps you take. To mark a planet's place you can use a piece of paper on a post that you stick into the ground, or you can use a flag, or even a person. Be prepared for a long walk! If you build your solar system on a roll of toilet paper, you can make the Sun about .4 inches (10 mm) across and still fit the entire solar system on the roll. A standard roll of toilet paper has about 450 sheets that are about 4.375 inches long, hence the roll is about 164 feet long. You should check your toilet paper for length. Some are longer. You can click on the names of the planets and satellites to go the the Nine Planets web site page about them. LOTS of info there!

2. Views Of The Solar System Views of the solar system presents a multimedia adventure unfolding the splendor of the Sun, planets, moons, comets and asteroids. http://www.solarviews.com/eng/homepage.htm

Views of the Solar System by Calvin J. Hamilton THE SOLAR SYSTEM INTRODUCTION THE SUN MERCURY VENUS ... PLANETARY DATA RESOURCES STUDENT RESOURCES ACTIVITIES / LESSONS ICOSAHEDRONS ART GALLERY ... The Tenth Planet Has Been Discovered V iews of the Solar System presents a vivid multimedia adventure unfolding the splendor of the Sun, planets, moons, comets, asteroids, and more. Discover the latest scientific information, or study the history of space exploration, rocketry, early astronauts, space missions, spacecraft through a vast archive of photographs, scientific facts, text, graphics and videos. Views of the Solar System offers enhanced exploration and educational enjoyment of the solar system and beyond. Introduction Sun Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Asteroids Comets Meteorites History People Satellite Data Planetary Data Browser Glossary Credits Calvin J. Hamilton Privacy Statement

3. The Nine Planets Solar System Tour Overview of the history, mythology, and current scientific knowledge of our solar system with text, images, sounds and movies, and references. http://www.nineplanets.org/

The Nine Ten Planets A Multimedia Tour of the Solar System by Bill Arnett Bill's site map Fun Stuff 3D ScreenSaver 3D model of the solar system. Every planet is there along with its satellites and even a small info graph with basic facts. 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. 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

4. NASA - JPL Solar System Simulator Online software that generates views of the bodies of our planetary system at any date from any artificial or natural point of observation. http://space.jpl.nasa.gov/

+ View the NASA Portal Search JPL Targets and Date Show me The Solar System The Sun Mercury Venus Earth ...The Moon Mars ...Phobos ...Deimos Jupiter ...Io ...Europa ...Ganymede ...Callisto Saturn ...Mimas ...Enceladus ...Tethys ...Dione ...Rhea ...Titan ...Hyperion ...Iapetus ...Phoebe Uranus ...Ariel ...Umbriel ...Titania ...Oberon ...Miranda Neptune ...Triton ...Nereid Pluto ...Charon Cassini spacecraft Voyager 1 spacecraft Voyager 2 spacecraft Pioneer 10 spacecraft Pioneer 11 spacecraft Spitzer (SIRTF) spacecraft Rosetta spacecraft Ulysses spacecraft Deep Impact spacecraft as seen from above below The Sun Mercury Venus Earth ...The Moon Mars ...Phobos ...Deimos Jupiter ...Io ...Europa ...Ganymede ...Callisto Saturn ...Mimas ...Enceladus ...Tethys ...Dione ...Rhea ...Titan ...Hyperion ...Iapetus ...Phoebe Uranus ...Ariel ...Umbriel ...Titania ...Oberon ...Miranda Neptune ...Triton ...Nereid Pluto ...Charon Cassini spacecraft Voyager 1 spacecraft Voyager 2 spacecraft Pioneer 10 spacecraft Pioneer 11 spacecraft Spitzer (SIRTF) spacecraft Rosetta spacecraft Ulysses spacecraft Deep Impact spacecraft On Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec in the year at UTC Field of View (choose one) I want a field of view of degree(s) I want the body to take up percent of the image width Options (choose any) -orbits -extra brightness -show all spacecraft Samples Artwork Maps Models ... Kudos Simulator Developer / Graphic Artist: David Seal

5. Views Of The Solar System An indepth resource to the solar system. Including articles about each part of the solar system and its planets. http://www.solarviews.com/

Welcome to ... Views of the Solar System (English) Vistas del Sistema Solar (Spanish) Vistas do Sistema Solar (Portuguese) Ansichten des Sonnensystems (German) ... Privacy Statement

6. StarChild: A Learning Center For Young Astronomers Information and online movies related to the solar system and space exploration. A service of the High Energy Astrophysics Science Archive Research Center at NASA. http://starchild.gsfc.nasa.gov/docs/StarChild/StarChild.html

Welcome to StarChild A Learning Center for Young Astronomers Show me a printable version of this page. Return to the StarChild Main Page Go to Imagine the Universe! (A site for ages 14 and up.) The StarChild site is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC) Dr. Nicholas E. White (Director) , within the Exploration of the Universe Division (EUD) at NASA/ GSFC StarChild Authors: The StarChild Team Acknowledgments StarChild Project Leader: Dr. Laura A. Whitlock Responsible NASA Official: Phil Newman If you have comments or questions about the StarChild site, please send them to starchild@heasarc.gsfc.nasa.gov NASA's Privacy Statement NASA's Security Statement

7. Orrery : Solar System Simulator A Java applet that simulates gravitating masses. Features a working model with motions and sizes of 70 planets and moons to scale. http://www.cuug.ab.ca/~kmcclary/

Update(Nov.2000)The Linux version of the new Mozilla close all applications before clicking on the model links. use a small browser window, the problem gets worse as the size of the display increases. while zooming turn "PLAY" off and don't drag the mouse - just click. Zoom: Click or drag the mouse near the edge/center of the display (black area) to ZOOM out/in. Destroy, Create (not working in some models) see below In some models the status line of your browser shows the width of the display in kilometers, astronomical units and light years. Orrery : Solar System Simulator A Java Applet that simulates gravitating masses. Solar system models and demos of Lagrange points, solar system stability, etc. New! Orrery with NASA Images Links ( Most contributed by Jeff K. ) Calculators Online Applets (write once, crash everywhere): N-Body motion simulation in Java Gravitation 3.8 Solar Sail Navigation School Inner Solar System Model ... JLABS Orrery Applet Other software: Orrery program using Java-3D Orbit Xplorer Windows, 15 second demo. Gravitator Pro Newtons Aquarium (MacOS - free demo offered) Mercury Celestial and Orbital Mechanics Web Site Other solar system sites: Solar System Live (Where are the planets today?)

8. Astronomy 121 Summer 1995 Introductory course taught at the University of Oregon. Includes course materials and many links to supplementary resources. http://zebu.uoregon.edu/astr121.html

Astronomy 121 On-line Access Properties of Our Solar System: Course Materials Administrative stuff: Course Overview Course Outline Helpful Computer Hints for Survival in this Class Paperless Class ... Read The Newsgroup for This Class Some Internet Resources for This Class The Periodic Table of Elements Hubble Space Telescope Current Positions of the Planets Welcome to the Planets ... Voyager Mission to the Outer Planets Quizzes, Tests and Homework: First Homework Assignment First Midterm Hints Take The First Midterm Lab Exercise for Tuesday July 18 ... Take The Second Exam Lectures: Lecture #1 > What is this Class About Anyway? Lecture #2 > Early Solar System Models Lecture #3 > Newton, Gravity and Orbits Lecture #4 > Orbital Properties of the Solar System Lecture #4a > Orbital Properties of the Earth Lecture #5,6 > Overview of The Solar System Lecture #7 > Formation of The Solar System Lecture #7a > Formation of The Earth's Moon Lecture #8 > Formation of Planetary Atmospheres Lecture #9 > From Atmospheric Chemistry to DNA on the Earth Atmosphere Lecture #9a > Monomers to Polymers Lecture #9b > Oxygen Addition to the Earth's Atmosphere Lecture #10,11 >

9. The Nine Planets Solar System Tour Information about each planet and moon in our solar system with many pictures of each planet, discussion of the history of its discovery and http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

10. Views Of The Solar System Views of the solar system presents a multimedia adventure unfolding the splendor of the Sun, planets, moons, comets and asteroids. Discover the http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

11. Astronomy For All Index with graphics and illustrations about stars, the solar system, cosmology and Galileo. http://www.pd.astro.it/E-MOSTRA/A0000HOM.HTM

ASTRONOMY FOR ALL! Don't miss If you want to know more about stars, planets, galaxies, read here. For every age level, you can study your favourite topics in depth, and see more excellent pictures and astronomical animations. For children, and for beginners in astronomy, Starchild represents a simple and amusing tool. It is subdivided into an elementary level and a more advanced one. The advanced level, also with many pictures and animations, is available for adults and for whoever is already familiar with the subject. STARCHILD ADVANCED LEVEL

12. Welcome To The Planets A collection of many of the best images from NASA's planetary exploration. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

13. An Overview Of The Solar System The solar system consists of the Sun; the nine planets, more than 130 satellites Traditionally, the solar system has been divided into planets (the big http://www.nineplanets.org/overview.html

An Overview of the Solar System Orbits The solar system consists of the Sun ; the nine planets, more than 130 satellites of the planets, a large number of small bodies (the comets and asteroids), and the interplanetary medium. (There are probably also many more planetary satellites that have not yet been discovered.) The inner solar system contains the Sun Mercury Venus Earth and Mars The main asteroid belt (not shown) lies between the orbits of Mars and Jupiter. The planets of the outer solar system are Jupiter Saturn Uranus Neptune and Pluto The first thing to notice is that the solar system is mostly empty space. The planets are very small compared to the space between them. Even the dots on the diagrams above are too big to be in proper scale with respect to the sizes of the orbits. The orbits of the planets are ellipses with the Sun at one focus, though all except Mercury and Pluto are very nearly circular. The orbits of the planets are all more or less in the same plane (called the ecliptic and defined by the plane of the Earth's orbit) . The ecliptic is inclined only 7 degrees from the plane of the Sun's equator. Pluto's orbit deviates the most from the plane of the ecliptic with an inclination of 17 degrees. The above diagrams show the relative sizes of the orbits of the nine planets from a perspective somewhat above the ecliptic (hence their non-circular appearance). They all orbit in the same direction (counter-clockwise looking down from above the Sun's north pole); all but Venus, Uranus and Pluto also rotate in that same sense.

14. Bob The Alien's Tour Of The Solar System Information about planets, moons, comets, asteroids, stars and galaxies. http://hometown.aol.com/bobalien99/index.htm

htmlAdWH('93212816', '728', '90'); Main Astronomy Click here to enter the website.......... var site="sm3aliencounter"

15. The Solar System - Pictures Of The Planets Pictures and quizzes about all the planets in the solar system. This site is especially useful to middle school students studying the solar system. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

16. Solar System Exploration Home Page Part of NASA's Office of Space Science that describes NASA's program to explore the solar system. http://solarsystem.nasa.gov/index.cfm

NASA Homepage Contact NASA New Gullies on Martian Sand Dune This pair of narrow-angle images from the Mars Orbiter Camera shows the dune as it appeared on July 17, 2002, (left) and as it appeared on April 27, 2005, (right). NASA Prepares Facilities for Hurricane Rita NASA facilities that could be in the path of Hurricane Rita are reassessing necessary preparations. NASA Releases Plans for Next Generation Spacecraft NASA Administrator Michael Griffin today released the results of the exploration architecture study. Asteroid Riddling What objects bombarded the early inner solar system in a cataclysm 3.9 billion years ago? Missions: CloudSat Getting Set to Launch The experimental satellite is tentatively scheduled to launch no earlier than Oct. 26. Kids: Extreme Space Pick a planet and read on to find out more amazing facts about our extreme solar system. Beware the Mars Hoax Earth and Mars are converging for a close encounterbut not as close as some people think. TODAY (15:13 UT) 45th Anniversary

17. Solar System Live Includes information and images related to the solar system and its inner planets. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

18. Solar System Live Includes information and images related to the solar system and its inner planets. http://www.fourmilab.ch/solar/solar.html

Solar System Live by John Walker Welcome to Solar System Live, the interactive Orrery of the Web. You can view the entire Solar System , or just the inner planets (through the orbit of Mars). Controls allow you to set time and date, viewpoint, observing location, orbital elements to track an asteroid or comet, and a variety of other parameters. Click on the title of any control to display a help page explaining it, or go directly to the help table of contents . You can compose a request with custom settings and save the results in your browser's hotlist or bookmark table, allowing direct access to Solar System Live with all the controls preset to your own preferences. To use Solar System Live, you need a graphical Web browser with forms support and the ability to display GIF images. Windows users can create orrery displays like this in real time, on their own machines, as well as view the Earth, sky, stars at the horizon, track Earth satellites, and more with Home Planet , my public domain Earth/Space/Sky simulator available for downloading from this site. Other public domain astronomy and space software available from this site includes: On the Web: Earth and Moon Viewer Terranova : a new terraformed planet every day.

19. NASA - JPL Solar System Simulator Offers the possibility to see what the Sun and every planet and their major moons look like from any other place in the solar system at nearly any http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

20. Solar System Live More results from www.fourmilab.ch Virtual solar systemFlyby 3D tour or 2D tour of the sun and each planet in its orbit, with close-up views of the planets and weather patterns. Requires a Viscape SVR browser http://www.fourmilab.ch/cgi-bin/uncgi/Solar/action?sys=-Sf

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