An element is a chemical substance made up of a particular kind of atom and hence cannot be broken down or transformed by a chemical reaction into a different element, though it can be transmuted into another element through a nuclear reaction.
Almost 40 years separate Shirley Ann Jackson's achievement, as the first African-American woman to earn a Ph.D. in theoretical high energy physics at Massachusetts Institute of Technology, and Jedidah Isler, the first African-American woman to receive a Ph.D. in Astrophysics from Yale.
Famous AKAs: Alpha Kappa Alpha Sorority, Inc., Celebrates 100 Years Dr. Mae Jemision, honorary member and the first African-American woman astronaut, showed her AKA pride when she carried the sororityâs flag with her during her first flight in 1992.