Katherine Johnson, a mathematician who calculated rocket trajectories and earth orbits for NASA’s early space missions and was later portrayed in the 2016 hit film “Hidden Figures,” about pioneering black female aerospace workers, has died. She was 101.

Johnson died Monday of natural causes at a retirement community in Newport News, Virginia, family attorney Donyale Y. H. Reavis told The Associated Press.

NASA Administrator Jim Bridenstine said in a statement that Johnson “helped our nation enlarge the frontiers of space even as she made huge strides that also opened doors for women and people of color.”

Johnson was one of the “computers” who solved equations by hand during NASA’s early years and those of its precursor organization, the National Advisory Committee for Aeronautics.

Johnson and other black women initially worked in a racially segregated computing unit in Hampton, Virginia, that wasn’t officially dissolved until NACA became NASA in 1958. Signs had dictated which bathrooms the women could use.

Johnson focused on airplanes and other research at first. But her work at NASA’s Langley Research Center eventually shifted to Project Mercury.