| Downloadable Product | Explorers' Guide to the Solar System (new window) | Exploring other worlds in our solar system stretches our minds and excites our imaginations like nothing else. It's the only way to answer some of our deepest questions. This 71-page Microsoft Powerpoint presentation includes stunning images and a suggested script to guide your talk. |
| Downloadable Product | What Makes a Planet? | The decision by the International Astronomical Union (IAU) in 2006 to define the terms "planet" and "dwarf planet" has caught the attention of the public and students from grade school to graduate school. Get podcasts, lessons and more on "What Makes a Planet?" |
| Vodcasts/Videos | What is a Planet? (new window) | This question has been pondered since the early Greeks came up with the word "planetes." This video illustrates the history behind the discussion defining what a planet is, and outlines some of the traits that may be associated with its definition. |
| Vodcasts/Videos | What Hubble Has Taught Us About the Planets | Hubble sees far into the universe, but it also has revealed much about our own solar neighborhood. |
| Vodcasts/Videos | Hubble's Eye on the Universe | JPL's camera on the Hubble captured some of the most memorable images. |
| Vodcasts/Videos | The Solar System (YouTube)
The Solar System (HD Download) | An artist's view of our solar system |
| Images | Solar System Exploration Images | View some "Great Shots" from our exploration of the solar system. |
| Podcast | Census of the Solar System | When I grew up, there were nine planets, a couple of dozen moons, a hundred comets, and six thousand asteroids. But that was thirty years ago, and things have changed. This podcast combines a look at how many of what objects is/are out there, with some historical digressions on the definitions of the objects involved. |
| Interactive | 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. |
| Interactive | Slide Show: 3-D Solar System | Grab a pair of 3-D glasses and check out views of Mars, Earth and moons. |
| Network | Solar System Ambassadors | The Solar System Ambassadors is a nation-wide network of volunteers who are trained to communicate the excitement of NASA's space exploration missions and recent discoveries to people in their local communities. |
| Network | Museum Alliance | The Museum Alliance is a network of museums, science centers, planetariums, observatories, parks, NASA visitor centers, nature centers, zoos, and aquariums that bring current NASA science and technology to their visitors through professional development of their staff and access to NASA staff, content and materials. |
| Downloadable Product | Hubble Observations of Ceres and Pluto: A Closer Look at the "Ugly Ducklings" of the Solar System | This article by The Universe in the Classroom has a detailed background on the history of defining planets. |
