McGraw-Hill has always taken an interest in helping students explore the world around them. This strong belief in active student learning led McGraw-Hill to help equip the MDM Observatory at Kitt’s Peak National Observatory near Tucson, Arizona. The MDM Observatory houses the 1.3-m McGraw-Hill telescope. Visit the MDM homepage at http://www.astro.lsa.umich.edu/obs/mdm/index.html.