
Katherine Johnson's Calculations Were Essential to NASA's Moon Landing
Katherine Johnson, an African American mathematician at NASA, computed the orbital mechanics for multiple critical missions including the first American crewed spaceflight (Alan Shepard, 1961), John Glenn's orbital mission (1962), and the Apollo 11 Moon landing (1969). Glenn famously refused to fly unless Johnson personally verified the computer's trajectory calculations. She worked at NASA for 33 years and was awarded the Presidential Medal of Freedom in 2015. Her story was told in the film Hidden Figures (2016).