Our sun is a pretty ordinary star; just one of billions in the universe. In this course, we'll look at our moon, the sun, earth, the other planets and other common neighbors in our solar neighborhood.

The universe is everything: all the billions of galaxies, each with billions of stars, and all the dust, gas, and empty space in between.  In this course, you'll get an overview of everything: how it began, and how it may end. 

We'll also look at human efforts to explore space so far.

For over 4 billion years, earth has been making and remaking rocks. In this course, we'll learn what rocks can tell us about the earth, and which ones are common or useful.

The first scientist to suggest that continents move was ridiculed; now we know it's true. The earth's crust floats around on a semi-liquid mantle, and that causes most earthquakes and volcanoes. In this course, we'll see how that and other geologic forces shape  and re-shape the solid earth.

Weathering and erosion are two processes that shape the surface of earth. Mostly it's water.

We live miles deep in an ocean of air. This course will study our atmosphere, and how it protects us.

In the next course, we'll see how it makes our weather.

Earth Science Tests