What did Marie curie do or prove?

Answer 1

she proved that polonium and radium do exsiste

Answer 2

Marie Curie, a pioneering scientist, conducted groundbreaking research on radioactivity and discovered the elements polonium and radium. Her work laid the foundation for the development of X-ray technology and revolutionized the field of nuclear physics. Curie was the first woman to win a Nobel Prize and remains an iconic figure in the history of science.