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.

What objects are in the day sky and the night sky? How do they seem to move? Come and explore with us as we discover the sun, moon, planets and stars! This detailed lesson plan includes pictures and videos of the lesson in action,...

This comprehensive site delves into other aspects of our solar system besides the planets and the sun. Click on the topics on the right like solar winds, the heliosphere, the heliopause, asteroids, comets, and more.