Imagine being so good at math that the federal government trusts you to calculate whether astronauts survive reentry into Earth’s atmosphere.
Orbital mechanics. Launch windows. Trajectory equations. Reentry angles.
The kind of math where one wrong decimal can kill someone.
Now imagine being trusted with that level of responsibility while still being told you cannot use the same bathroom as your coworkers.
That was the reality for Katherine Johnson, one of the most important mathematicians behind the American space program.
In this episode of Barely Historical, Amanda and JoLynne dive into the story of the woman whose calculations helped send astronauts into orbit while she navigated segregation, sexism, and Cold War politics inside NASA.
Born in 1918 in segregated West Virginia, Katherine Johnson showed extraordinary mathematical talent early in life. She enrolled in college at 15 and graduated at 18 with degrees in mathematics and French.
But despite her brilliance, the career options available to a Black woman with a math degree in the 1930s were extremely limited. For years she worked as a teacher, even though she had the kind of mind that could calculate orbital trajectories.
That changed in 1953 when she was hired by NACA, the government agency that would later become NASA.
There, she joined a group of women mathematicians known as human computers.
These women performed the complex calculations engineers needed for aerodynamics, flight testing, and eventually space travel using pencils, slide rules, and a terrifying level of competence.
But the workplace was segregated.
Black women mathematicians worked in a separate building called West Area Computing. They used different bathrooms, ate at separate cafeteria tables, and were rarely invited into engineering meetings about the work they were actually doing.
Still, Katherine Johnson’s math was impossible to ignore.
She began attending engineering briefings anyway. She corrected calculations. She asked questions others could not answer.
Eventually she became the first woman in her division credited as co author on a research report.
Then came one of the most famous moments in space history.
In 1962 astronaut John Glenn was preparing to orbit Earth aboard Friendship 7. NASA had started relying on electronic IBM computers to calculate flight trajectories, but the technology was still new.
Before launch Glenn made a request.
“Get the girl to check the numbers.”
He meant Katherine Johnson.
If she said the numbers were correct, he would fly.
She checked them by hand.
They were right.
Glenn orbited the Earth, the United States scored a major Cold War victory, and Katherine Johnson quietly went back to work.
Over the next 33 years she contributed to the Mercury missions, Apollo trajectory calculations, and early space shuttle planning.
While the country argued about segregation and who belonged in the room, she was calculating who would survive reentry.
In this episode Amanda and JoLynne also talk about the segregated West Area Computing Unit at Langley Research Center, the women NASA called computers, and why Katherine Johnson forced her way into engineering meetings.
There is also a game of NASA Slang or I Made It Up featuring terms like Go Fever, Max Q, Scrub, and Abort Mode.
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Because chances are she has been carrying the room longer than anyone noticed.
