This resource describes special properties of light that can help us to understand objects that are millions and billions of light years away. Students explore some of these properties and how they can use them to...

This site is a collection of role-playing exercises for teaching space science. It includes debates and collaborative problem-solving exercises, with data and equations provided to the students. Topics include the...

This NASA educator guide tells the story of why it is important to observe celestial objects from outer space and how to study the entire electromagnetic spectrum. It features a set of hands-on activities and...

Readers can learn about the latest advancements in X-ray astronomy, and how the newest generation of instruments are making observations of the behavior of light, matter, and space-time in the vicinity of black holes....

Visitors can read and view imagery that explains how additional information can be revealed about celestial objects when they are imaged in multiple wavelengths or in wavelengths outside the visible range. Using the...