Sally Ride , the first U.S. woman in space passed away on July 23, 2012. She made history in 1983 when she traveled on the space shuttle Challenger as the first female crew member. Following her space endeavors she went on to create Sally Ride Science, an educational venture aimed at promoting math and science for girls. She also continued to work on special projects with the NASA space program including the investigations into the losses of the space shuttle Challenger and space shuttle Columbia. She became an inspiration to so many girls (this one included!) looking at a future in the sciences. For more information on Sally Ride click here.