Final answer:
Marie Curie had four siblings. She won two Nobel Prizes in both physics and chemistry and had two daughters, one of whom, Irene, also won a Nobel Prize.
Step-by-step explanation:
Marie Curie, a pioneering scientist known for her groundbreaking work in radioactivity, had a total of four siblings. Marie Curie and her husband, Pierre Curie, along with Henri Becquerel, shared the Nobel Prize in Physics in 1903 for their discovery of radioactivity. After the tragic death of Pierre Curie in 1906, Marie was left with her two small children, Irene and Eve. Irene, following in her mother's footsteps, also won a Nobel Prize, thus contributing to a remarkable scientific legacy. Marie Curie became the only person to win Nobel Prizes in both physics and chemistry when she was awarded the Nobel Prize in Chemistry in 1911 for her discovery of two new elements, radium and polonium, named after her native country Poland.