Ida Noddack (born Ida Tacke), her husband Walter Noddack, and Otto Berg in Germany discovered rhenium in 1925. Ida Noddack was the first to prepare few milligrams of the metal in 1926. In 1935 she critisized the work of Enrico Fermi and predicted the fission of uranium four years before confirmation experimentally by Otto Hahn and Fritz Strassmann in 1939. The role of Lise Meitner in explaining the work of Hahn was necessary.