Creola Katherine Johnson (née Coleman; August 26, 1918 – February 24, 2020) was an American mathematician whose calculations of orbital mechanics as a NASA employee were critical to the success of the first and subsequent U.S. crewed spaceflights. During her 33-year career at NASA and its predecessor, she earned a reputation for mastering complex manual calculations and helped pioneer the use of computers to perform the tasks. The space agency noted her "historical role as one of the first African-American women to work as a NASA scientist".
Katherine Johnson was born as Creola Katherine Coleman on August 26, 1918, in White Sulphur Springs, West Virginia, to Joylette Roberta (née Lowe) and Joshua McKinley Coleman. She was the youngest of four children. Her mother was a teacher and her father was a lumberman, farmer, and handyman. He also worked at the Greenbrier Hotel.
After graduating from high school at the age of 14, Johnson matriculated at WVSC, a historically black college. She took every course in mathematics offered by the college. Several professors mentored her, including the chemist and mathematician Angie Turner King, who had guided Coleman throughout high school, and W. W. Schieffelin Claytor, the third African-American to receive a doctorate in mathematics. Claytor added new mathematics courses just for Johnson. She graduated summa cum laude in 1937, with degrees in mathematics and French, at age 18. Johnson was a member of Alpha Kappa Alpha. She took on a teaching job at a black public school in Marion, Virginia.
In 1939, after marrying her first husband, James Goble, she left her teaching job and enrolled in a graduate math program. She quit at the end of the first session and chose to focus on her family life. She was the first African-American woman to attend graduate school at West Virginia University in Morgantown, West Virginia. Through WVSC's president, John W. Davis, she became one of three African-American students, and the only woman, selected to integrate the graduate school after the 1938 United States Supreme Court ruling in Missouri ex rel. Gaines v. Canada required States which provided public higher education to white students to provide it to black students as well, either by establishing black colleges and universities or by admitting black students to previously white-only universities.
Johnson decided on a career as a research mathematician, although this was a difficult field for African Americans and women to enter. The first jobs she found were in teaching. At a family gathering in 1952, a relative mentioned that the National Advisory Committee for Aeronautics (NACA) was hiring mathematicians. At the Langley Memorial Aeronautical Laboratory, based in Hampton, Virginia, near Langley Field, NACA hired African-American mathematicians as well as whites for their Guidance and Navigation Department. Johnson accepted a job offer from the agency in June 1953.
Katherine and James Francis Goble had three daughters. The family lived in Newport News, Virginia, from 1953. James died of an inoperable brain tumor in 1956 and, three years later, Katherine married James A. "Jim" Johnson, a United States Army officer and veteran of the Korean War; the pair were married for 60 years until his death in March 2019 at the age of 93. Johnson, who had six grandchildren and 11 great-grandchildren, lived in Hampton, Virginia. She encouraged her grandchildren and students to pursue careers in science and technology.
NACA disbanded the colored computing pool in 1958 when the agency was superseded by NASA, which adopted digital computers. Although the installation was desegregated, forms of discrimination were still pervasive. Johnson recalled that era:
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 found quickly after landing, using the accurate trajectory that had been established.
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.
From 1958 until her retirement in 1986, Johnson worked as an aerospace technologist, moving during her career to the Spacecraft Controls Branch. She calculated the trajectory for the May 5, 1961, space flight of Alan Shepard, the first American in space. She also calculated the launch window for his 1961 Mercury mission. She plotted backup navigation charts for astronauts in case of electronic failures. When NASA used electronic computers for the first time to calculate John Glenn's orbit around Earth, officials called on Johnson to verify the computer's numbers; Glenn had asked for her specifically and had refused to fly unless Johnson verified the calculations. Biography.com states these were "far more difficult calculations, to account for the gravitational pulls of celestial bodies".
Johnson co-authored 26 scientific papers. Her social influence as a pioneer in space science and computing is demonstrated by the honors she received and her status as a role model for a life in science. Johnson was named West Virginia State College Outstanding Alumnus of the Year in 1999. President Barack Obama presented her with the Presidential Medal of Freedom, one of 17 Americans so honored on November 24, 2015. She was cited as a pioneering example of African-American women in STEM. President Obama said at the time, "Katherine G. Johnson refused to be limited by society's expectations of her gender and race while expanding the boundaries of humanity's reach." NASA noted her "historical role as one of the first African-American women to work as a NASA scientist."
In 2015, President Barack Obama awarded Johnson the Presidential Medal of Freedom. In 2016, she was presented with the Silver Snoopy Award by NASA astronaut Leland D. Melvin and a NASA Group Achievement Award. She was portrayed by Taraji P. Henson as a lead character in the 2016 film Hidden Figures. In 2019, Johnson was awarded the Congressional Gold Medal by the United States Congress. In 2021, she was inducted posthumously into the National Women's Hall of Fame.
Johnson was included on the BBC's list of 100 Women of influence worldwide in 2016. In a 2016 video NASA stated, "Her calculations proved as critical to the success of the Apollo Moon landing program and the start of the Space Shuttle program, as they did to those first steps on the country's journey into space."
Science writer Maia Weinstock developed a prototype Lego for Women of NASA in 2016 and included Johnson; she declined to have her likeness printed on the final product. On May 12, 2018, she was awarded an honorary doctorate by the College of William & Mary. In August 2018, West Virginia State University established a STEM scholarship in honor of Johnson and erected a life-size statue of her on campus. Mattel announced a Barbie doll in Johnson's likeness with a NASA identity badge in 2018. In 2019, Johnson was announced as one of the members of the inaugural class of Government Executive's Government Hall of Fame.
The film Hidden Figures, released in December 2016, was based on the non-fiction book of the same title by Margot Lee Shetterly, which was published earlier that year. It follows Johnson and other female African-American mathematicians (Mary Jackson and Dorothy Vaughan) who worked at NASA. Taraji P. Henson plays Johnson in the film. Appearing alongside Henson at the 89th Academy Awards, Johnson received a standing ovation from the audience. In an earlier interview, Johnson offered the following comment about the movie: "It was well done. The three leading ladies did an excellent job portraying us." In a 2016 episode of the NBC series Timeless, titled "Space Race", the mathematician is portrayed by Nadine Ellis.
In June 2019, George Mason University named the most prominent building on their SciTech campus, the Katherine G. Johnson Hall.
In 2020, Bethel School District, Washington, named its newest school the Katherine G. Johnson Elementary.
Johnson died at a retirement home in Newport News on February 24, 2020, at age 101. Following her death, Jim Bridenstine, NASA's administrator, described her as "an American hero" and stated that "her pioneering legacy will never be forgotten."
On November 2, 2020, Fairfax County Public Schools—the largest school division in the Commonwealth of Virginia and 12th largest school division in the United States, and the City of Fairfax, Virginia, announced that the latter's school board had voted to rename its middle school, previously named after Confederate soldier, poet, and musician Sidney Lanier to Katherine Johnson Middle School (KJMS), after 85 percent of its residents voiced their support in favor.
On November 6, 2020, a satellite named after her (ÑuSat 15 or "Katherine", COSPAR 2020-079G) was launched into space. In February 2021, Northrop Grumman named its Cygnus NG-15 spacecraft to supply the International Space Station the SS Katherine Johnson in her honor.
In 2021, San Juan Unified School District, in Sacramento, California, named its newest school Katherine Johnson Middle School. That same year the Baltimore County Public Schools named one of its three new schools the Katherine Johnson Global Academy.