Lesson plans, interactive activities, and other resources to help students learn about and explore our solar system
The sun is surrounded by all kinds of planets, meteors, comets, and planetoids. It also has an asteroid belt, and inside it are the inner planets.
On the other side of the sun's asteroid belt are another four plants, which we call the outer planets. Get to know them!
There is a special force of attraction that keeps our planet together. Do you know what it is?
What causes night and day? Read this, and the next time you wake up, you will know the reason for the sunrise!
We love our moon. But did you know that any natural object that orbits a planet is called a moon? That is correct! Our moon is not the only moon.
The universe means everything, all of space. Do you ever wonder how big it is? So do scientists.