What were Katherine goble Johnson accomplishments?

Katherine Goble Johnson was a pioneering African American mathematician whose calculations were critical to the success of NASA's early space missions. She played a vital role in the trajectory analysis for the first American in space, Alan Shepard, and worked on the calculations for John Glenn's orbital flight, which helped ensure its success. Johnson's contributions to the Apollo moon landing and the Space Shuttle program further solidified her legacy in aerospace engineering and mathematics. Her work not only advanced space exploration but also broke down racial and gender barriers in STEM fields.