Katherine Johnson

American mathematician
Also known as: Katherine Coleman, Katherine Goble
Quick Facts
Née:
Katherine Coleman
Also known as (1939–56):
Katherine Goble
Born:
August 26, 1918, White Sulphur Springs, West Virginia, U.S.
Died:
February 24, 2020, Newport News, Virginia (aged 101)
Awards And Honors:
Presidential Medal of Freedom (2015)
Role In:
Apollo 11
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Katherine Johnson (born August 26, 1918, White Sulphur Springs, West Virginia, U.S.—died February 24, 2020, Newport News, Virginia) was an American mathematician who calculated and analyzed the flight paths of many spacecraft during her more than three decades with the U.S. space program. Her work helped send astronauts to the Moon.

Coleman’s intelligence and skill with numbers became apparent when she was a child; by the time she was 10 years old, she had started attending high school. In 1937, at age 18, Coleman graduated with highest honours from West Virginia State College (now West Virginia State University), earning bachelor’s degrees in mathematics and French. She subsequently moved to Virginia to take a teaching job. In 1939, however, she was selected to be one of the first three African American students to enroll in a graduate program at West Virginia University. She studied math there but soon left after marrying James Goble and deciding to start a family. He died in 1956, and three years later she married James Johnson.

In 1953 she began working at the National Advisory Committee for Aeronautics (NACA)’s West Area Computing unit, a group of African American women who manually performed complex mathematical calculations for the program’s engineers. The women, known as the West Computers, analyzed test data and provided mathematical computations that were essential to the success of the early U.S. space program. During this time, NACA was segregated, and the West Computers had to use separate bathrooms and dining facilities. That changed in 1958 when NACA was incorporated into the newly formed National Aeronautics and Space Administration (NASA), which banned segregation.

Equations written on blackboard
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Numbers and Mathematics

At NASA Johnson was a member of the Space Task Group. In 1960 she coauthored a paper with one of the group’s engineers about calculations for placing a spacecraft into orbit. It was the first time a woman in her division received credit as an author of a research report. Johnson authored or coauthored 26 research reports during her career.

Johnson also played an important role in NASA’s Mercury program (1961–63) of crewed spaceflights. In 1961 she calculated the path for Freedom 7, the spacecraft that put the first U.S astronaut in space, Alan B. Shepard, Jr. The following year, at the request of John Glenn, Johnson verified that the electronic computer had planned his flight correctly. Glenn subsequently made history aboard Friendship 7, becoming the first U.S. astronaut to orbit Earth. Johnson was also part of the team that calculated where and when to launch the rocket for the Apollo 11 mission of 1969, which sent the first three men to the Moon. Johnson later worked on the space shuttle program. She retired from NASA in 1986.

Johnson received numerous awards and honours for her work, including the Presidential Medal of Freedom (2015). In 2016 NASA named a building, the Katherine G. Johnson Computational Research Facility, after her. That year Margot Lee Shetterly published Hidden Figures: The American Dream and the Untold Story of the Black Women Mathematicians Who Helped Win the Space Race, about the West Computers, including Johnson, Dorothy Vaughan, and Mary Jackson. A film based on the book was also released in 2016. Johnson’s memoir, My Remarkable Journey (2021; written with Joylette Hylick and Katherine Moore), was published posthumously.

The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Encyclopaedia Britannica.

5 Incredible Women in STEM You Need to Know

You may know everything about Albert Einstein or Isaac Newton. But have you heard of these women in STEM?
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We owe a number of humanity’s great scientific, mathematical, and technological developments to women—even if they often aren’t given the credit they’ve earned. Here are just five of those women.

Gladys West

Gladys West is the mathematician you have to thank for not getting lost on your next road trip. Her work on Seasat, an experimental U.S. ocean surveillance satellite designed to provide data on a wide array of oceanographic conditions and features, led to a more well-known technology: the Global Positioning System (GPS). Like the National Aeronautics and Space Administration (NASA) mathematicians Katherine Johnson, Dorothy Vaughan, and Mary Jackson, West is often called one of history’s “hidden figures”: individuals, often Black women, whose insightful contributions to science went unrecognized in their lifetime because of their race or gender. West wasn’t formally recognized for her contribution to the development of GPS until 2018, when she was inducted into the Air Force Space and Missile Pioneers Hall of Fame.

Tu Youyou

Chinese scientist Tu Youyou’s knowledge of traditional Chinese medicine alongside Western medicine aided the discovery of a cure for malaria. During the Vietnam War the Chinese government put Tu at the head of its covert Project 523, an effort to discover a treatment for malaria, which was devastating Chinese allies in North Vietnam. By testing plants used in herbal treatment for efficiency against malaria, Tu and her team discovered that an extract from the sweet wormword plant reduced parasite levels in the blood of malaria patients. Called qinghaosu or artemisinin, the active compound in the wormwood extract was the world’s first effective defense against malaria.

Mary Golda Ross

Mary Golda Ross was the only woman and only Native American member of the Skunk Works, a secretive team at the Lockheed Aircraft Company formed to design missiles and fighter jets for the U.S. Army. The F-104 Starfighter (the first operational aircraft that could reach speeds twice as fast as the speed of sound), the U-2 high-altitude spy plane, and the first stealth aircraft are just a few of the aerospace innovations that came out of the Skunk Works—and they likely number among the hundreds or thousands of top-secret projects Ross worked on at Lockheed. The work she could talk about was done at the National Aeronautics and Space Administration: developing spacecraft, contributing to NASA’s guide to space travel, and accelerating the space race.

Ida Rhodes

Born in 1900 to a small Jewish family in Ukraine, Ida Rhodes immigrated to the United States with her family when she was 13 years old; less than a decade later she had completed her undergraduate degree in mathematics at Cornell University and was headed to a master’s program. Though she began her career working on the Handbook of Mathematical Functions, part of a New Deal-era program that offered jobs to mathematicians, she quickly became a pioneer in the burgeoning field of computer programming. In the early 1950s Rhodes designed the C-10 programming language for the UNIVAC 1—one of the earliest commercial computers to ever exist.

Alice Ball

The first woman and the first African American to earn a master’s degree from the College of Hawaii (now the University of Hawaii), Alice Ball was an outstanding scientist who was almost lost to history. When she was hired as a researcher and instructor at the College of Hawaii after her graduation, Ball began work with Harry T. Hollmann, a physician who hoped to create an effective method of treating leprosy with chaulmoogra oil (a treatment that was already in use but was unreliable). By manipulating the oil into a water-soluble form, she developed the first safe injectable treatment for leprosy.

But in 1916, at age 24, Ball died, possibly of chlorine poisoning. Her work was continued by College of Hawaii president Arthur Dean—who, since Ball had not yet published her work, declined to credit her as a researcher. Without a brief mention in a journal article by Hollmann, who referred to her innovation as “the Ball method,” knowledge of her work might have been lost forever.

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[Discover more women in STEM who are part of the World Science Festival’s Pioneers in Science program.]

Meg Matthias