This episode chronicles the life of Katherine Johnson, a brilliant mathematician whose calculations were essential to the success of the American space program. Despite facing systemic racism and gender discrimination in the segregated South, Johnson’s mastery of analytic geometry allowed her to map trajectories for the first Americans in space. The sources highlight her role as a “human computer,” specifically noting how astronaut John Glenn trusted her manual verifications over early digital technology. Her story illustrates a broader history of uncredited labor by women of color that provided the scaffolding for major national achievements like the Apollo 11 moon landing. Ultimately, the text explores how Johnson transitioned from an invisible worker to a celebrated icon, receiving the Presidential Medal of Freedom for her contributions to science and equality.