Meet Katherine Johnson, a brilliant mathematician who worked at NASA in the early 1950s until retiring in 1986. Katherine's unparalleled calculations (done by hand) helped plan the trajectories for NASA's Mercury and Apollo missions (including the Apollo 11 moon landing). She is said to be one of the greatest American minds of all time.--.
Profiles four women who have been integral to NASA's space program, helping to develop the Hubble Space Telescope, create computer code to send spacecraft to the moon, and work onboard the space shuttle.
