The remarkable physicist known for her contributions to nuclear physics and her work on the Manhattan Project is Chien-Shiung Wu. Wu's groundbreaking experiments challenged existing theories in particle physics, particularly her work on beta decay, which demonstrated that parity is not conserved in weak interactions. As a key member of the Manhattan Project, she played an essential role in developing the atomic bomb during World War II. Wu's contributions to science have significantly advanced our understanding of nuclear processes and established her legacy as a pioneering woman in physics.