A true legend is celebrating a milestone birthday.
Katherine Johnson, one of the female mathematicians who was critical to many NASA operations, is 99 today.
Her story recently was played out on the silver screen in the movie Hidden Figures, which is based on the nonfiction book by the same name. Johnson was portrayed by actress Taraji P. Henson in the film.
— Dr Paul Coxon (@paulcoxon) August 25, 2017