<P> Johnson later worked directly with digital computers . Her ability and reputation for accuracy helped to establish confidence in the new technology . In 1961, her work helped to ensure that Alan Shepard's Freedom 7 Mercury capsule would be quickly found after landing, using the accurate trajectory that had been established . </P> <P> She also helped to calculate the trajectory for the 1969 Apollo 11 flight to the Moon . During the moon landing, Johnson was at a meeting in the Pocono Mountains . She and a few others crowded around a small television screen watching the first steps on the moon . In 1970, Johnson worked on the Apollo 13 moon mission . When the mission was aborted, her work on backup procedures and charts helped set a safe path for the crew's return to Earth, creating a one - star observation system that would allow astronauts to determine their location with accuracy . In a 2010 interview, Johnson recalled, "Everybody was concerned about them getting there . We were concerned about them getting back ." Later in her career, Johnson worked on the Space Shuttle program, the Earth Resources Satellite, and on plans for a mission to Mars . </P> <P> In 1939, Katherine (then Coleman) married James Francis Goble . They had three daughters: Constance, Joylette, and Katherine . In 1953, she and James moved their family to Newport News to pursue a new job opportunity . In 1956, James Goble died due to an inoperable brain tumor . </P> <P> Katherine Goble remarried in 1959 to James A. Johnson, who had been a Second Lieutenant in the Army and was a veteran of the Korean War . </P>

What happened to katherine's first husband in hidden figures
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