After extensive computer modeling, University of Louisville J.B. Speed School of Engineering experts believe they have finally determined the gender of the 2,600-year-old Egyptian mummy called Then-Hotep. The mummy reposes in the science center's Discovery Gallery, where it's one of the most popular exhibits. It was removed from its grave in Egypt in 1903 during an archeological dig commissioned by the Egyptian government and was included in Egypt's national display at the 1904 St. Louis World's Fair.