deaths
Katherine Johnson, American physicist and mathematician (born 1918)
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Katherine Johnson
American NASA mathematician (1918–2020)
Creola Katherine Johnson was an American mathematician whose calculations of orbital mechanics as a NASA employee were critical to the success of the first and subsequent U.S. crewed spaceflights. During her 33-year career at NASA and its predecessor, she earned a reputation for…Source: Wikipedia (CC BY-SA)
February 24
Day of the year
February 24 is the 55th day of the year in the Gregorian calendar; 310 days remain until the end of the year.Source: Wikipedia (CC BY-SA)