Many astronomy spacecraft have orbited above Earth over the last 30 years. The data collected by these satellites have changed and enlarged our conceptions of the universe. While the activities in the Space Astronomy guide address the technologies used in studying the universe from above Earth's atmosphere, little attention has been paid to what those instruments have actually accomplished. The best way to study astrophysics results is by examining the actual data and imagery collected. Pictures taken in visible wavelengths and enhanced through computer processing are stunning in their beauty as well as their scientific value.

NASA's Astrophysics Division has assembled a colorful set of 35 mm slides on its astrophysics spacecraft and some of their results. Each slide is accompanied with abbreviated and detailed captions. It is easy to obtain a copy of the slides. They are available from the Central Operations of Resources for Educators (CORE) in Ohio or from NASA's Teacher Resource Centers. Please refer to the Educational Resources list for details on how to contact CORE or the NASA Teacher Resource Center that serves the state you live in.