21. The Nine Planets A multimedia tour of the solar system. http://www.nineplanets.org/

T he N ine P lanets A Multimedia Tour of the Solar System by Bill Arnett The Nine Planets is an overview of the history, mythology, and current scientific knowledge of each of the planets and moons in our solar system. Each page has text and images, some have sounds and movies, most provide references to additional related information. I nterplanetary spacecraft have revolutionized planetary science. Very little of this document would have been possible without the space program. Contents I ntroduction W hat's New ... malthea and T hebe I o ... asiphae and S inope R ecently discovered moons ... an and A tlas P rometheus and P andora E pimetheus ... elesto and C alypso D ione and H elene R hea ... elinda and P uck M iranda ... Stephano , and N eptune N aiad ... espina and G alatea L arissa ... luto and C haron S mall Bodies ... eeing the Solar System with your own eyes S pacecraft involved in planetary science H ow you can h elp support the continued exploration of space G lossary of technical terms and proper names A ppendices 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 (or "Don't believe everything you read") Master Picture List , an index of planetary images on the Net Credits for those who helped make this possible Mirror sites : There are copies of The Nine Planets at many sites around the world.

22. A Scale Model Of The Solar System online Java applet This 3d solar system applet can be rotated and zoomed with the mouse. Below it are links to other online gravity simulators and resources for building solar system simulations. http://www.burtleburtle.net/bob/physics/solar.html

This applet is the obligatory scale model of the solar system. Distance is in AUs, velocity in AUs per hour, mass in units of 10 pounds, yielding G=1.2944x10 . Initial positions are accurate to about 5 digits. The simulation doesn't account for relativity, oblateness of the sun, solar winds, asteroids, galactic gravitational flux, and any number of other things. The numbers in the corner count how many displays have been done and the fractional error in energy conservation. It starts 1am on January 1, 1999. To start or stop, click. To spin around the sun, click in the middle and drag. To rotate and zoom, click near the edges and drag. The sun remains in the center; there are no controls yet to change that, or to change the distance from the sun. I also have and applet description , some online references for how to build a solar system simulator, a set of stable orbits filling 3-space , a page exploring gravitation with Java , a simulation of Cruithne , and Klemperer rosettes sun mercury venus earth+moon mars jupiter saturn uranus neptune pluto The US Navy provides the coordinates of all planets now, and at any other time give or take a century. I used this for my initial coordinates. (Position is at 1am on January 1, 1999, and velocity is half of 2am minus midnight.)

23. USGS Flagstaff Solar System Browser Browse the solar system. Kids will love this.Category Science Astronomy Images...... Browse the solar system. Click on a planetary image in the chart below toobtain more information on the selected object. Browse the solar system. http://wwwflag.wr.usgs.gov/USGSFlag/Space/wall/wall.html

24. Solar System Exploration Home Page The solar system Exploration Home Page is part of NASA's Office of SpaceScience and describes NASA's program to explore the solar system. http://solarsystem.nasa.gov/

25. Solar System Exploration: Bodies: Jupiter Excluding the sun, Jupiter contains most of the mass of the solarsystem, and in composition it resembles a small star. http://solarsystem.nasa.gov/features/planets/jupiter/jupiter.html

See a kid-friendly version of this page. With its numerous moons and several rings, the Jupiter system is a "mini-solar system." Jupiter is the most massive planet in our solar system, and in composition it resembles a small star. In fact, if Jupiter had been between fifty and one hundred times more massive, it would have become a star rather than a planet. On January 7, 1610, while skygazing from his garden in Padua, Italy, astronomer Galileo Galilei was surprised to see four small "stars" near Jupiter. He had discovered Jupiter's four largest moons, now called Io Europa Ganymede , and Callisto . Collectively, these four moons are known today as the Galilean satellites. Jupiter, the Great Red Spot and moon Io. Galileo would be astonished at what we have learned about Jupiter and its moons in the past 30 years. Io is the most volcanically active body in our solar system. Ganymede is the largest planetary moon and has its own magnetic field. A liquid ocean may lie beneath the frozen crust of Europa. An icy ocean may also lie beneath the crust of Callisto. As recently as February 2003, astronomers discovered 12 new moons orbiting the giant planet. Jupiter now officially has 52 moons - the most in the solar system. Many of the outer moons are probably

26. ACCREATION OF THE EARTH AND SOLAR SYSTEM: A New Cosmology Copyright 1999, Lawren Introduces a new theory of creation of the Earth and solar system. http://home.earthlink.net/~meteordust/

New evidence that the Earth is rapidly increasing in size and mass contradicts Laplace's Nebular Hypothesis of Earth's creation, now 200 years old. Accreation (creation by accretion) is presented here as a new concept of planetary creation to replace it. Accreation (creation by accretion) is a byproduct of 35 years of research and study that proved Earth's diameter has expanded rapidly in the past ~200 Ma. In that relatively short period of geologic time all of today's oceans, and most of the water that now fills them, have been created by melting and expansion of Earth's core. (See http://www.expanding-earth.org) The Earth is increasing in size and mass by daily accretion of extraterrestrial meteorites and meteor dustadditional weight that is gravitationally focused on the planet's exact center, thereby generating compressive heat and thermal expansion of the core. (See diagram below) Core expansion is the mechanism causing the Earth to expand, and the rate of expansion accelerates over time as the planet increases in mass by daily bombardment of THOUSANDS OF TONS of meteorites and meteor dust that also adds a thin layer of dust on the surfacewith a 75% chance of falling on some body of water. This is the primary source for the oceans' deep sediment layers that have accumulated over the past ~200 Ma as new ocean seafloors have been generated by volcanic magma extruded via the midocean ridges that now encircle the Earth. The current philosophy of creation of the Earth and Solar System is based on two ancient but closely-related historical documents: (1) The story in Genesis that God created the heavens and earth in six days; and (2) Laplace's Nebular Hypothesis of creation of Earth and other planets of the Solar System that was published in 1796, a period in history when philosophical notions of Nature's wonders had to agree generally with the Bible's teachings.

27. NASA - JPL Solar System Simulator Collection of maps of the planets and moons, many derived from multispectral images taken by NASA Category Science Astronomy Amateur Sky Maps and Atlases......This is a database of JPL/Caltech generated planetarymaps. Select your planetary system of choice! http://maps.jpl.nasa.gov/

This is a database of JPL/Caltech generated planetary maps. Select your planetary system of choice! Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto... Star maps though many of these textures have been stitched together directly from multispectral images taken by NASA spacecraft, they should not be used for scientific analysis. Many of these images have blank spots where no images have been taken; some have also been enhanced and slightly altered for aesthetic appeal. For some bodies, no global maps are available at this site yet; some we just haven't explored enough to get any reasonably high resolution images (like Pluto). Maps of the gas giants (Jupiter, Saturn, Neptune, and Uranus) and Titan are merely meant to be representative; atmospheric dynamics will change the body's appearance daily. For planetary maps that are generated and owned by non-JPL/Caltech teams, try the Planetary Map Hub and pages by Bjorn Jonsson and James Hastings-Trew. Image Use Policy FAQ Feedback ... Site Map Simulator Developer / Artist / Webmaster: David Seal

28. NASA - JPL Solar System Simulator Three high resolution star maps in .tif format for download. Tycho, Hipparcos and Yale bright star Category Science Astronomy Stars......Thumbnail, Body, Click to download, Data Source, Creator,Owner, Horiz. Size, Vert. Size, Resol. (pix/deg). Tycho starmap, http://maps.jpl.nasa.gov/stars.html

Thumbnail Body Click to download Data Source Creator Owner Horiz. Size Vert. Size Resol. (pix/deg) Tycho star map 2.9M tif 250k tif Eros Seal Caltech/JPL Hipparcos star map 670k tif 150k tif Eros Seal Caltech/JPL From the Hipparcos star catalog, 118,000 stars. Yale bright star map 110k tif 44k tif Yale Seal Caltech/JPL From the Tycho star catalog, 9110 stars. Image Use Policy FAQ Feedback Site Map Simulator Developer / Artist / Webmaster: David Seal

29. ORRERY: The Solar System In Action A concise tour containing numerous educational resources, and support for Spacetech's Orrery application.Category Science Astronomy solar system......Learn about the solar system and beyond! The amazing planets, theirmoons, asteroids, comets and the sun - our star. Resources http://www.harmsy.freeuk.com/orrery.html

Please visit our sponsor: "My goal is simple: It is complete understanding of the Universe, why it is as it is, and why it exists at all." A concise reference... Mercury Venus Earth Mars ... Bookmark this page! Shop on-line with Orrery Orrery Store books, videos and more! Miscellaneous Icons mythical planets Software downloads Zodiac your stars are wrong !Orrery updates: Orrery software review RISC OS 4 patch compliance Planet Descriptions upgrade Setup Files dynamic models Harry Potter 5 Pre-order: 50% off! UK US Staffroom site owned by Andrew Harmsworth . Updated 9th April. Prev 5 Skip Prev Prev Next ... Sign Guestbook A RISC OS Webring site. [ next prev rand index Featured on Red TV in September 2000

30. Astronomy For All Extensive index full of graphics and illustrations about stars, the solar system, cosmology and Galileo. http://www.pd.astro.it/hosted/MOSTRA/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

31. The Solar System - Pictures Of The Planets Quizzes and images about all the bodies of our planetary system.Category Science Astronomy solar system......The solar system in Pictures. About Other links Io picture. You willalso find astronomy WebQuests here. Planets in our solar system. http://www.the-solar-system.net/

The Solar System in Pictures About Other links Please click on a picture to enlarge it This website has 315 web pages with over 340 pictures. This website has 2 purposes: To give a pictorial overview of the solar system and to quiz you about these pictures. After each page of information about the solar system there are some review questions about the pictures on that page. There are also 15 picture quizzes with 75 questions - each question comes with a picture. You will also find astronomy WebQuests here. Planets in our Solar System The planet Mercury - Pictures and quizzes about the planet Mercury The planet Venus - Pictures and quizzes about the planet Venus The planet Earth - Small 3D Stereoscopic pairs gallery Added - 17 September 2002 The planet Mars - Pictures and quizzes about the planet Mars The planet Jupiter - Pictures and quizzes about the planet Jupiter The planet Saturn - Pictures and quizzes about the planet Saturn 3D images of Saturn - No red/blue glasses required. Added - 23 September 2002 The planet Uranus - Pictures and quizzes about the planet Uranus The planet Neptune - Pictures and quizzes about the planet Neptune Pluto and Charon - Pictures and quizzes about the planet Pluto Picture quizzes of our solar system - A set of 15 quizzes - each question has a picture.

32. ThinkQuest Library Of Entries Designed by kids, for kids, this is a great introduction to the 9 planets. Features video, sounds, and a guided tour. http://library.advanced.org/25401

Welcome to the ThinkQuest Internet Challenge of Entries The web site you have requested, Earthrise: A Tour of Our Solar System , is one of over 4000 student created entries in our Library. Before using our Library, please be sure that you have read and agreed to our To learn more about ThinkQuest. You can browse other ThinkQuest Library Entries To proceed to Earthrise: A Tour of Our Solar System click here Back to the Previous Page The Site you have Requested ... Earthrise: A Tour of Our Solar System click here to view this site A ThinkQuest Internet Challenge 1999 Entry Click image for the Site Languages : Site Desciption Students Joey Hillsboro High School OR, United States Adam Hillsboro High School OR, United States Doris CHUNG CHENG HIGH SCHOOL (MAIN) Singapore Coaches Rocky Hillsboro High School OR, United States Joyce Chung Cheng High Main Singapore

33. 3-D Tour 3D Tour of the solar system Teacher's Guide and 3-D Posters. AWARDS Selectedas a valuable educational internet resource for Discovery Channel School. http://www.lpi.usra.edu/research/stereo_atlas/SS3D.HTM

3-D Tour of the Solar System: Teacher's Guide and 3-D Posters AWARDS: Selected as a valuable educational internet resource for Discovery Channel School. Images watermarked using

34. 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 Laboratory for High Energy Astrophysics (LHEA) 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

35. Scale Model Demonstrations Of The Solar System Scale Model Demonstrations of the solar system. Many students have othergrade levels. Demonstration 1 The Size of the solar system. http://www.lpi.usra.edu/pub/education/K12/planetsize/planetsize.html

Scale Model Demonstrations of the Solar System Many students have trouble visualizing the size of the solar system compared to the sizes of the individual planets. We use these demonstrations at the Lunar and Planetary Institute with fifth-grade students in our science enrichment class on "Exploring the Solar System." However, the demonstrations can also be adapted for use in other grade levels. Demonstration 1: The Size of the Solar System The first demonstration illustrates the sizes of the planets and the distances between planets. For this exercise, consider the Earth, whose diameter is 12,740 kilometers, to be just 1 millimeter across, the size of a grain of sand. The Sun is slightly more than 100 times the size of Earth, 1.4 million kilometers in diameter, or about 11 centimeters in this demonstration. Using this size scale, the table shows how large each planet is and how far it is from the Sun. Mount an appropriately sized object for each planet on a set of dowel sticks. For example, the Sun can be a small styrofoam ball, Jupiter and Saturn are small ball bearings, and Earth and the smaller planets are grains of sand. It is not necessary to have each object (particularly the small ones) precisely the correct size; choose available materials that are reasonably close to the specified sizes. Label each stick with the planet's name. Size Distance from Sun Light Time from Sun Spacecraft Trip Mercury 0.4 millimeters

36. Solar System Online Provides the K12 educational community with new, exciting information on space science, project information, and interaction with astronomers and space scientists. http://quest.arc.nasa.gov/sso/index.html

It appears that your browser does not support JavaScript, or you have it disabled. This site is best viewed with JavaScript enabled. If JavaScript is disabled in your browser, please turn it back on then reload this page. Or, if your browser does not support JavaScript, click here

37. Astronomy 161: The Solar System Overview with historical background and basic astronomy concepts, details about planets, satellites, Category Science Astronomy solar system......Astronomy 161 The solar system In this semester of Astronomy we shall concernourselves primarily with the solar system. As an introduction http://csep10.phys.utk.edu/astr161/lect/

Astronomy 161 The Solar System In this semester of Astronomy we shall concern ourselves primarily with the Solar System. As an introduction to that, we shall consider the historical development of our modern picture of the Solar System. Introduction A Sense of Time and Scale in the Universe Precursors to Modern Astronomy Overview of the Sky and Planets ... ASTRONOMY 162 LECTURES Next Back Top Home Help

38. The Planets Explorer Resources A Java applet that shows an interactive 3D representation of the planets and satellites of the solar system. http://www.inicia.es/de/avillanueva

The Planets Explorer has a new home!!! In a few seconds, you will be redirected to the new home page at: http://www.3dinteractivo.com There you will find more downloads, demos, videos, ... all hosted in a faster server. Do not forget to update your bookmarks and favorite links

39. The Copernican Model: A Sun-Centered Solar System The Copernican Model A SunCentered solar system The Earth-centered Universe ofAristotle and Ptolemy held sway on Western thinking for almost 2000 years. http://csep10.phys.utk.edu/astr161/lect/retrograde/copernican.html

The Copernican Model: A Sun-Centered Solar System The Earth-centered Universe of Aristotle and Ptolemy held sway on Western thinking for almost 2000 years. Then, in the 16th century a new idea was proposed by the Polish astronomer Nicolai Copernicus The Heliocentric System In a book called On the Revolutions of the Heavenly Bodies (that was published as Copernicus lay on his deathbed), Copernicus proposed that the Sun, not the Earth, was the center of the Solar System. Such a model is called a heliocentric system . The ordering of the planets known to Copernicus in this new system is illustrated in the following figure, which we recognize as the modern ordering of those planets. The Copernican Universe In this new ordering the Earth is just another planet (the third outward from the Sun), and the Moon is in orbit around the Earth, not the Sun. The stars are distant objects that do not revolve around the Sun. Instead, the Earth is assumed to rotate once in 24 hours, causing the stars to appear to revolve around the Earth in the opposite direction. Retrograde Motion and Varying Brightness of the Planets The Copernican system by banishing the idea that the Earth was the center of the Solar System, immediately led to a simple explanation of both the varying brightness of the planets and retrograde

40. Astro Gallery User contributed images of deep sky, solar system, and astronomyrelated. http://astrolink.mclink.it/intl/astrog.htm

Astro Gallery This page need the contribute of everyone who can supply images. If you are interested in the project you can contact Stefano Iacus We accept all digital formats for images. Subjects can be: Deep Sky Solar System Sky with elements of terrestial landascape Sundials ... List of the new images Among all the images you send, we select periodically one to be the Astro Gallery cover. PLEASE NOTE each author is responsible for the images he sends and guarantees for originality and property. We decline all the responsability. Number of access to this page from September 6 1995: 42,451. Go to Astro-link HomePage.

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