A slideshow and a short multiple-choice quiz on the four inner planets of our solar system, which include Mercury, Venus, Mars, and Earth.

Compare the masses of planets in this interactive animation. Simply pile a number of Earths on one side of the scale, to balance with the mass of one Jupiter. Then try this with all the planets.

A virtual journey through space offers photos and facts about Earth and its neighboring planets, comets, other celestial bodies of the Solar System, and the Milky Way and Andromeda galaxies.

See what you know about the solar system by taking this brief interactive quiz and learning module.

Fascinating collection of images from NASA, chosen for their historical or aesthetic significance. Images are searchable by subject, by NASA center, and by keyword, and each is available in three sizes. With links to more information...

A NASA scientist, Dr. Sten Odenwald, answers many students' questions. Topics include planets, galaxies, black holes, the origin of the universe, and common misconceptions about space.

NASA's space science site for kids - en Espanol. Features a wide range of activities, including games, projects, animations, and more. Also contains useful information on basic physics, chemistry, and other natural sciences, offering...

This resource provides a general overview of all the planets in the solar system, as well as the sun, various comets and asteroids, the deep space network, and the latest solar system news.

This stunning site on the solar system gives a great overview of the planets and our sun. Learn about each object's size, vital statistics, and moons. Then go on for a more in depth look at these objects in the column on the left.

Here is a clear, simple picture of the solar system. Click on the names of the planets to learn more about each. Clicking on underlined terms takes you to more and more detailed scientific information.

[Free Registration/Login Required] An informational text about outer space. A question sheet is available to help students build skills in reading comprehension.

Imagine a time when you can travel through space, planet to planet, cheaply and in comfort, when you can take a trip to the stars as your next holiday. Well, imagine no more. Learn more about the solar system as you take this trip of a...

Identify the planets in our solar system and discover how much you weigh on another planet with these space interactives.

StarChild from NASA defines and describes the Solar System in a simple and easy-to-understand manner. The website is broken down into two versions for the student, grade school and junior high.

Contains a small set of images of solar system objects and a series of links to information about all solar system objects. Solar System Tours link to excellent image collections.

This NASA site provides access to publicly released images from various Solar System exploration programs.

Collection of images, with vocalized explanatory captions, of the planets acquired by NASA as part of its exploratory space programs.

This site from NASA's Space Place is geared towards early elementary learners. It offers detailed instructions for crafts and activities related to space, games and a teacher resource area. Students can also ask an expert at this site.

Where is our Solar System? How far away is the sun? What makes up the sun? Find out all you want to know about our solar system. This is a comprehensive on-line site about space and astronomy. Check out all of the excitement!

[Free Registration/Login Required] This flipchart guides online research on a study of our solar system and links the teacher to a WebQuest activity.

[Free Registration/Login Required] In this lesson students will compare and contrast the attributes of star, star patterns and planets. Students will also have the opportunity to review facts about each planet and then complete various...

Solar system surface map database. Includes maps of all solid planets and many moons. Maps of gas planets are either based on images taken by Voyager, or are fictitious maps including general storm systems.

A fantastic collection of information about the solar system. Includes information on all of the planets, the moon, the sun, asteroids, comets, meteoroids, and stars. Also find puzzles, a dictionary, quizzes, classroom activities, and...

This site gives you opportunities to practice putting the planets in the correct order from the sun. Press "Click here to begin" to get started.