This document summarizes the biography of Shelia Widnall, who was inducted into the National Women's Hall of Fame. It notes that she graduated from MIT in the 1960s as one of only 23 women in a class of over 900. She later had a notable career as a professor of aeronautics and astronautics at MIT, spanning over three decades. Additionally, she was the first woman to serve as Secretary of the US Air Force, holding that position from 1992 to 1997. She made contributions as an astrophysicist, author, researcher, and pilot, paving the way for women in the military, science, and academics.