Modern · United States
Katherine Johnson
1918-2020
Their story
Why Katherine Johnson matters
Johnson calculated trajectories, launch windows and return paths for crewed space missions.
Katherine Johnson worked in United States during the Modern era. Science was becoming a team effort carried out in universities, hospitals, observatories, industry and large research laboratories.
Working in mathematics and spaceflight, Katherine Johnson looked for structures that could be expressed clearly and used again. Turning a difficult idea into an organised method allowed later learners and researchers to build from the same starting point.
Key discovery or invention
Orbital calculations for NASA missions.
Katherine Johnson's central contribution was orbital calculations for NASA missions.
The important advance was not simply one answer. It was a logical structure, calculation or procedure that other people could follow step by step, check for themselves and reuse on new problems.
Why it still matters: Modern mathematics, software and data systems still depend on clear definitions, repeatable procedures and logical proof. Katherine Johnson's work is one chapter in that continuing story rather than the final word.
John Glenn asked for her to check the computer's orbital numbers before his 1962 flight.