Annie Jump Cannon's Legacy in Astronomy: Pioneering Star Classification and Empowering Women
Annie Jump Cannon, a trailblazing astronomer, is celebrated for her significant contributions to the field of astronomy, particularly in the classification of stars. Born in Delaware, Cannon was introduced to stargazing by her mother and pursued her passion by studying physics and astronomy at Wellesley College. After her mother's death in 1894, she furthered her studies at Radcliffe College, where she joined a group known as 'Pickering’s women' under the direction of Harvard Observatory Director Edward Pickering. These women, often referred to as 'computers,' conducted research and calculations. Cannon's work involved examining image plates of stars, leading her to refine a classification method based on their colors, which correlate with their temperatures. This method, remembered by the mnemonic 'Oh! Be A Fine Girl — Kiss Me!' for the OBAFGKM classes, was published in the Henry Draper Catalogue and adopted by the International Astronomical Union in 1922. Cannon's career was marked by numerous achievemen... 
