Marie Curie was the first woman to receive a PhD in physics, completing her degree at the University of Paris in 1903. Her pioneering research focused on radioactivity, a term she coined, which laid the groundwork for advancements in both physics and medicine. Curie's groundbreaking work led to the discovery of radium and polonium, elements that significantly contributed to cancer treatment and scientific research. Her achievements not only opened doors for women in science but also emphasized the importance of perseverance in the face of barriers. Curie's legacy continues to inspire future generations of scientists around the world.