Get to know our little part of the vast universe. Learners read about the common and not-so-common facts about each of the planets in the solar system. The interactive lesson includes a large amount of information as well as a quiz to...

Excellent resource for "paper-plate" activities that help simplify various astronomy topics. Learn how to build a "Moon Finder" and "Planet Pointer," and create a paper-plate model that explains the Transit of Venus.

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.

This planetarium program allows you to create an accurate model of the solar system with icons or pictures of each planet. You can specify a date in the past or the future, change the viewpoint to any latitude/longitude, and even view in...

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!

This site has many articles from the first moments of life of the universe to its properties, current models, black holes, galaxies, etc.