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Katherine Johnson, NASA Mathematician Dies

Katherine Johnson, NASA Mathematician And An Inspiration For 'Hidden Figures,' Dies –  By Russell Lewis npr.org

Katherine Johnson, a mathematician who was one of NASA's human "computers" and an unsung hero of the space agency's early days, died Monday. She calculated the flight path for America's first space mission and the first landing on the moon, and was among the women profiled in the book and movie Hidden Figures. She was 101.