This educator’s guide features three curriculum enhancement activities and one scientific literacy activity, extensive background information, assessment rubrics, student worksheets, extension and transfer activities, and detailed information about the physical science and mathematics content standards. An electronic version of one of the activities is also available that uses a spreadsheet and image processing software. This guide was developed by the XMM-Newton and GLAST E/PO programs Note: In 2008, GLAST was renamed Fermi, for the physicist Enrico Fermi. Educational levels: Middle school, High school, Undergraduate lower division, Undergraduate upper division