1918 AD–2020 AD
Katherine Johnson
Science · Personas científicas · Matemáticas · Astronomía
A NASA mathematician whose trajectory checks contributed to Mercury, Apollo, and other missions. Her technical work is recorded within the teams and racial and gender barriers she navigated.
Precision, calendar, and review
- Start
- year · no uncertainty qualifier in this record
- End
- year · no uncertainty qualifier in this record
- Calendar and convention
- Historical-era years; the source calendar is not identified. No conversion of days is assumed.
- Year zero
- The scale goes from 1 BCE to 1 CE without year zero. Changing era names changes labels only.
- Documentary review
- Date not recorded
Reading the date: life span.
Sources
- www.nasa.gov (opens in a new tab)
Source provenance and scope
- Publication date
- Pending verification
- Source updated
- 2024-06-28
- Bibliographic date checked
- 2026-09-23
The correspondence between this reference and individual claims has not yet been itemized.
This record is an editorial synthesis. Consult the sources to check claims and their limits. Chronological relationships alone do not establish causation.