In our SkyServer Projects, you will learn science by studying the stars and galaxies of the Sloan Digital Sky Survey (SDSS) – the same objects that professional astronomers study. Most of these objects have never been seen before by human eyes.


Work through these projects at your own pace. Each consists of several questions and exercises. The projects include downloadable Excel spreadsheets to help you keep track of your data.

Each project ends with a Research Challenge, which lets you do real astronomy research, just like thousands of professional astronomers around the world.

Click on one of the following project categories to get started:

Basic projects

For middle school, high school, and Astronomy 101 students, and for people who want a basic understanding of astronomy

Advanced projects

Appropriate for advanced high school and college students, and for people who want a detailed understanding of astronomy

Research Challenges

Independent research in astronomy – you pick a problem and choose how to solve it! The Research Challenges are great for Science Fair projects or guided inquiry activities.

For Kids

Projects designed for kids