The first woman to earn a Ph.D. in physics was Marie Curie in 1903. Her groundbreaking research in radioactivity, a term she coined, laid the foundation for modern physics and chemistry. Curie's achievements not only advanced scientific understanding but also broke barriers for women in science during an era when female scientists were largely unrecognized. Her work earned her two Nobel Prizes in different scientific fields: Physics and Chemistry. Curie's legacy continues to inspire generations of aspiring scientists and advocates for women's participation in STEM fields.