Katherine Johnson was a NASA mathematician who helped calculate the flight path for NASA’s first manned space mission in 1962, and made important calculations for the Apollo moon landing. Her story was depicted in the film “Hidden Figures,” a critically acclaimed movie detailing the experience of Johnson, Dorothy Vaughan, and Mary Jackson — three African-American mathematicians who worked on John Glenn’s first launch into space. She continued working at Langley Research Center for 33 years and retired in 1986. In 2015, she was awarded the Presidential Medal of Freedom by President Barack Obama. She died on February 24, 2020 at 101 years old.