Material to begin an exploration of the Solar System: the characteristics of the planets, theories about planet formation, and more. An hour-long video is accompanied by learning goals, an outline and overview, details on star formation,...

Test your knowledge about the solar system with games and activities designed to help explore what you know about the sun, the planets and their moons, space rocks, the Milky Way, and related topics.

This is a useful resource for facts and images pertaining to the planet Mercury.

In ancient times only five planets were known: Mercury, Venus, Mars, Jupiter, and Saturn. Learn about Greek astronomer Ptolemy's theory for the solar system that was to survive for fourteen centuries.

Amazing Science looks at the Solar System with this FAQ site and lesson plan.

The plate tectonics and other features of the Earth's lithosphere are explained and illustrated. Has links to definitions of the magnetosphere, atmosphere, and hydrosphere.

This survey of the planets includes all the basics, size, mass, atmosphere, length of day, and the like. It features interactive activities and learning exercises and compares all of the planets in colorful tables.

A portal to resources on the sun, the Earth's neighboring planets, and the weather in space. Find out why Saturn is the "jewel of the Solar System" and explore what happens when Venus and Mercury make their rare transits across the sun.

Explore the dozens of Saturn's moons orbiting the second largest planet of our solar system. Find out about the Cassini space mission which explored Saturn's largest moon, Titan.

Explore the huge spherical region surrounding our solar system. Find out what the Oort Cloud contains and how comets originate there.

This site from the National Aeronautics and Space Administration allows students to explore topics related to planet earth and outer space. A number of games and interactive features are available.

Flip this interactive card to start learning about the planet Saturn. Answer multiple-choice and fact-or-fiction questions and review some fast facts about the second largest planet in our solar system.

Click and explore the solar system to discover where volcanoes can be found, on planets and moons.

This Public Broadcasting Service (PBS) activity explores the controversy over whether or not there is life on Mars. Part of the Mysteries of Deep Space Program that originally aired in April 1997, the activity includes instructional...

Flip the card, and learn about gravity.

Various different types of nebulae can be explored on this site. View and learn about this stellar phenomena and how they contribute to the growth of the solar system.

During this lesson, students have the opportunity to explore comets. By navigating the Internet, viewing a slideshow, and participating in a videoconference with NASA, students will discover what comets are all about.

Explore the possibility of life on planets outside our solar system. Create an extrasolar planet, then make the necessary adaptations for it to be capable of supporting human life.