Before there were sleek control rooms and touchscreens, spaceflight was a pencil-and-paper endeavor. And behind the scenes, a cadre of brilliant women many of them African American were the ones doing the math that put humans into orbit. Their stories, long buried in archives, are now coming to light thanks to the book and film Hidden Figures. This article explores the critical roles these women played, from the early days of human computers to the Apollo missions, and why their contributions matter for our understanding of both space history and the fight for equality.
The Human Computers: A Labor Force of Brilliance
In the 1930s, the National Advisory Committee for Aeronautics (NACA), NASA’s predecessor, began hiring women to perform complex mathematical calculations by hand. These “human computers” were essential to the research that would eventually power the space race. The work was tedious and demanding but the women were exceptionally skilled.
At Langley Research Center in Virginia, the computing pool was divided by race. The East Area Computing unit was made up of white women, while the West Area Computing unit, formed in 1943, was exclusively Black. The Black women faced the dual burden of racism and sexism. They worked in segregated offices, used separate bathrooms and cafeterias, and were often paid less than their white counterparts, even when they held the same or higher qualifications.
Despite these obstacles, their output was phenomenal. The West Area Computers were responsible for critical data that influenced aircraft design and, later, missile trajectories. But their roles were often classified as “sub-professional,” a label that denied them the title of mathematician or engineer, even when they performed the same duties.
Katherine Johnson: The Math Behind the Orbits
Perhaps the most famous of the hidden figures is Katherine Johnson. A mathematical prodigy, Johnson started at NACA in 1953. Her ability to calculate complex trajectories with precision quickly made her indispensable.
In 1961, she calculated the trajectory for Alan Shepard’s suborbital flight — the first American in space. Then, in 1962, she was called upon for John Glenn’s orbital mission. The newly installed electronic computers had produced numbers, but Glenn was wary. He famously insisted that Katherine Johnson verify the calculations by hand before he would board the capsule. “If she says they’re good,” he said, “then I’m ready to go.”
Johnson’s work extended to the Apollo program. She helped calculate the trajectory for the lunar landing, and her contributions were critical to the safe return of the Apollo 13 crew after an oxygen tank explosion. She also worked on the Space Shuttle program before retiring in 1986. In 2015, she received the Presidential Medal of Freedom from President Obama.
Mary Jackson and Dorothy Vaughan: Breaking Barriers
Mary Jackson was another trailblazer. She began as a human computer in 1951 but aspired to become an engineer. The problem: her graduate courses were at the segregated University of Virginia, and she needed special permission from the city of Hampton to attend. She fought for that permission, won, and in 1958 became NASA’s first African American female engineer.
Mary’s engineering work focused on the behavior of airflows around aircraft. But she later realized that her role was limited by the glass ceiling. So she took a demotion to become Langley’s Federal Women’s Program Manager, where she spent the rest of her career advocating for the hiring and promotion of women across the agency.
Dorothy Vaughan, meanwhile, was the first African American supervisor at NACA. She led the West Area Computing unit for a decade. When electronic computers began to replace human ones, Vaughan saw the writing on the wall. She taught herself FORTRAN, the programming language of the IBM machines, and then taught her team. This foresight allowed her and many of her colleagues to transition to new roles as programmers, ensuring their survival in a changing technological landscape.
Beyond Langley: Women Across the Space Program
The contributions of women were not limited to Langley. Mary Golda Ross, a Cherokee, became the first Native American female engineer. She worked at Lockheed on the Agena rocket, which was used in early satellite and space missions. Her work on ballistic missiles and orbital mechanics was classified, so much of her legacy remained unknown until recently.
Margaret Hamilton led the MIT team that developed the onboard flight software for the Apollo missions. She coined the term “software engineering” at a time when the field was not even recognized. Her error-detection software was so robust that during the Apollo 11 lunar descent, it prevented an abort that could have ended the mission. Hamilton’s work was later honored with the Presidential Medal of Freedom in 2016.
Frances “Poppy” Northcutt was the first woman to work as an engineer in NASA’s Mission Control. She joined the Apollo program in 1968, calculating return-to-Earth trajectories for Apollo 8. Her work was critical for ensuring the safe re-entry of the spacecraft. After leaving NASA, she became a women’s rights attorney, fighting for equality in a different arena.
The International Angle: The Soviet Union’s First Woman in Space
While American women were fighting for recognition, the Soviet Union achieved a major first. On June 16, 1963, Valentina Tereshkova became the first woman in space, orbiting Earth 48 times in Vostok 6. Her flight was a major propaganda victory for the USSR in the Cold War space race. However, it would be nearly two decades before another Soviet woman, Svetlana Savitskaya, flew in 1982. The Soviets, like the Americans, were slow to integrate women into their astronaut corps.
The United States did not send its first woman into space until 1983, when Sally Ride flew on the Space Shuttle Challenger. Ride was a physicist who had been selected as an astronaut in 1978. After her historic flight, she dedicated her life to encouraging girls to pursue STEM careers through her educational initiatives.
The Legacy and the Turning Point
The term “hidden figures” became part of the cultural lexicon in 2016 with the publication of Margot Lee Shetterly’s book and the subsequent Oscar-nominated film. The stories of Johnson, Jackson, Vaughan, and their colleagues resonated deeply because they exposed a long-buried truth: the space program was not just a triumph of white male engineers, but a collective achievement that included women and people of color.
Why were these contributions hidden for so long? The answer lies in the cultural norms of the mid-20th century. Engineering was considered “men’s work,” and women were often forced to resign upon marriage. Even when they were allowed to work, they were systematically denied promotions and titles. The glass ceiling was real, and it was reinforced by both sexism and racism.
The story of these women is not just a historical curiosity; it is a reminder of the costs of discrimination. By excluding talented individuals, the space program delayed its own progress. The Soviet Union’s early lead in space was partly due to its willingness to use women in technical roles, even if it was only for propaganda purposes.
Today, NASA and other space agencies have made strides in diversity, but the journey is far from over. The hidden figures serve as both inspiration and a call to action. Their legacy is not just in the trajectory calculations or the software code, but in the doors they opened for future generations.
Conclusion
The women of early space exploration were not merely helpers; they were essential architects of humanity’s journey beyond Earth. From Katherine Johnson’s hand-calculated flight paths to Margaret Hamilton’s pioneering software, their work made the impossible possible. Their stories, once hidden, now shine a light on the diverse contributions that have always been part of scientific progress. As we look to the stars, we must remember that the path was paved by many hands, many minds, and many hearts — and that the future of exploration depends on ensuring no one is left behind.
The history of space exploration is incomplete without the stories of the women who calculated, coded, and engineered their way into the cosmos. Their legacy is a reminder that brilliance knows no gender or race, and that true progress requires the contributions of all. As we celebrate the anniversaries of Apollo and look toward Mars, we honor these hidden figures by ensuring that the next generation of explorers reflects the full diversity of humanity.
Summary
- Women were employed as “human computers” at NACA/NASA from the 1930s to the 1960s, performing complex calculations by hand.
- Katherine Johnson calculated trajectories for Alan Shepard and John Glenn, and her work was critical for Apollo 11 and Apollo 13.
- Mary Jackson became NASA’s first African American female engineer, and Dorothy Vaughan led the West Area Computing unit and taught FORTRAN to her team.
- Margaret Hamilton coined “software engineering” and led the team that developed Apollo’s flight software.
- Valentina Tereshkova was the first woman in space in 1963; Sally Ride was the first American woman in space in 1983.
FAQ
Q: Who were the “human computers”?nA: They were women employed by NACA and NASA to perform mathematical calculations by hand, essential for aeronautical and space research. They worked in segregated units, with the West Area Computing unit for Black women and the East Area Computing unit for white women.nnQ: What was Katherine Johnson’s most famous contribution?nA: She calculated the trajectory for John Glenn’s orbital flight in 1962, and Glenn refused to fly unless she verified the computer’s calculations by hand. She also worked on Apollo 11 and the Space Shuttle.nnQ: How did Dorothy Vaughan adapt to the transition to electronic computers?nA: Vaughan taught herself FORTRAN and then taught her team, ensuring they could transition from human computing to programming roles.nnQ: Why were women excluded from visible roles in the space program?nA: Cultural norms, marriage bars, and a glass ceiling limited women’s opportunities. Engineering was seen as men’s work, and even qualified women were often not promoted.nnQ: What was the significance of the 2016 book and film Hidden Figures?nA: They brought the contributions of these women to mainstream attention, correcting a historical oversight and inspiring a new generation to pursue STEM careers.